PsychoticDan
29-09-2006, 18:45
... there are some things you should know about it. This is an excelent article on hydrogen. Basically it makes a good case for none of us living to see it.
DETROIT (ResourceInvestor.com) -- There is no logical or rational basis for small investors to make short-term investments in fuel cell development or in any other aspect of the “hydrogen economy.” The time frame in which such investments would “pay off” may well be between one and two generations. This is the well reasoned conclusion of a distinguished panel of American scientists reported two years ago in a special issue of Science, the journal of the American Association for the Advancement of Science, themed “Toward a Hydrogen Economy” (Issue for 14 August, 2004).
Financial analysts and financial publicists don’t seem to worry much about such well reasoned conclusions.
The announcement by General Motors [NYSE:GM] last week that it will produce, for driving trials next year, 100 fuel cell powered Chevrolet Equinoxes, its subsequent delivery of a fuel cell powered vehicle for testing to the U.S. Army and its further announcement of a fuel cell powered minivan earlier this week set off a public relations driven flurry of stories about the “hydrogen economy.”
The development of a safe, reliable fuel cell for vehicle applications is under way at every level, from large intensive programs to simple study ones, at all of the world’s OEM car makers. Many private companies both large GE [NYSE:GE], and small, Ballard [TSX:BLD], are also independently trying to develop a commercially viable fuel cell, and there are such programs also at many universities. It is very early in the development of fuel cells as mass produced power plants for vehicles. Yet the New York Times “Automobiles” section published a lead story called “Prequel to a Hydrogen Future: Driving G.M.’s Fuel Cell Prototype” on September 24, 2006.
Although American politicians, acting mainly to reduce pressure from their constituents that they do something about global warming, have proposed initiatives to provide federal funding to “study” and “promote” alternative fuel technology and, in particular, the development of a “hydrogen economy” there is, in fact, no Manhattan Project under way to develop the key elements of a hydrogen economy, because such a move is not (yet) perceived as a an response to an imminent threat to life and health.
The economic magnitude of a full scale conversion from fossil fuel to hydrogen as the basis of our energy production would be enormous. Such a conversion would proclaim and manifest itself as a structural change not only in the global energy industry but also in the global mining, manufacturing, automotive and fuel production and service industries. Vested interests in all of these industries and more would fight such a switch tooth and nail. Nations, such as Saudi Arabia, the economies of which are one trick ponies, based solely on the recovery and sale of fossil fuels, could simply fail and collapse into what used to be called third world status rapidly. The vested interests and the endangered nation-states will battle the development of the hydrogen economy every step of the way.
During World War II the United States, with Great Britain as (the only) invited guest participant, designed, instituted and implemented the greatest industrial research and development project in the history of mankind. With no limitations whatsoever on its budget, demand for energy, or on its draw of strategic (for the war effort) raw materials the project’s goal was to develop and implement a way to manufacture in quantity two isotopes of elements that were then considered rare and exotic. One of these isotopes, Uranium 235, existed in nature as 0.7% of natural uranium. The other, plutonium 233, did not exist in nature, but had been discovered only at the very beginning of the time period that the Manhattan Project came into existence.
A tiny cadre of physicists, mathematicians and chemists working only with slide rules, hand operated adding machines, and their brains had predicted that if a sufficient quantity of either of these isotopes could be assembled in a small volume then a reaction could be initiated with a simple neutron “trigger’ that would cause as much as 1% or 2% of the mass of either of them to be very rapidly converted into energy. The resulting explosion, of the minimum amount necessary, would be equivalent to, at least, 20,000 tonnes of TNT, and could conceivably destroy an entire city or damage a port beyond repair. At least this is what Albert Einstein said was possible in a famous letter to President Franklin D. Roosevelt in 1940. It had only been 35 years earlier than the drafting of that famous letter that Einstein, himself, had discovered the relationship between matter and energy that allowed physicists to predict the size of the explosion that would result from the nuclear fission of the “fissile” isotopes of uranium or plutonium.
Fission itself had only been observed and described in the 2 years previous to Einstein’s letter. And, when the letter was written, no one knew exactly how to make a deliverable bomb utilizing fission even if one had the fissile material in sufficient quantity. All of the scientists in the know did agree that it was possible in principal.
So, we had a situation where less than, perhaps 25 American, British and other European men (and one woman) who were firmly on the side of the wartime coalition, which America joined, to fight the German and Japanese militarist regimes, had such stature among politicians that their supposition that the project was do-able in principal convinced Franklin D. Roosevelt and Winston Churchill to dedicate enormous strategic resources of scientific, engineering and skilled manpower as well as resources of energy and metals to finding out if an atomic bomb could be built, and if so, to building not just one bomb but an assembly line for them.
The impetus for the Manhattan Project was simple. The two western leaders were convinced that if they didn’t commit to the project and their enemies did then if the project were successful the enemies would win the war by the threat of or actual annihilation of America and Britain and any and all of their allies.
Before you invest in fuel cell development or any part of the development of a hydrogen economy to replace the one we currently have, which is a global (energy) economy that gets its energy primarily and overwhelmingly from the burning of fossil fuels, ask yourself what is the driving force behind such a change?
There are two answers. The original impetus for a switch from fossil fuels to “hydrogen” was the reduction of pollution deemed injurious to health and habitat. That impetus has been joined during the last decade by a growing fear that the world is warming due to anthropogenic (i.e., man made) causes mainly from the burning of fossil fuels. This global warming it is feared will disrupt the world’s agricultural economy and produce dangerous weather extremes and eventually make conditions on earth unsuitable for sustaining human life. These reasons are not life threatening in the immediate or even in the near future. Therefore there is today no urgent pressure on national governments to create a Manhattan Project to bring about the profound and fundamental change that would result from the switch from a fossil fuel to hydrogen burning energy economy. There is also today no group of scientists with the stature necessary to, on their say-so alone, cause politicians to focus a major part of a nation’s economy on converting from fossil fuels to a hydrogen economy.
The mathematics of the design of an atomic bomb is deceptively simple. The story is told that the great experimental physicist, Enrico Fermi, scribbled on the back of an envelope and came up with a fair estimate of how much U235 would be needed to make a weapon. He had originally measured experimental values on the absorption of neutrons by U235 in the mid 1930s, but he had missed the discovery of fission. On the eve of the war a brilliant woman, Lise Meitner, had correctly explained the production of barium in experiments such as Fermi’s as resulting from the nuclear fission of uranium, and the resulting possibility of a chain reaction had been proposed. It quickly became clear to the specialized scientific community that a weapon of enormous power was possible.
The first idea was to build a gun type bomb where two halves of a critical mass of uranium would be driven together at high speed, by firing one half into the other inside of a gun barrel, to form momentarily a critical mass, which would then be triggered to undergo a self sustaining chain reaction. This was exactly what was eventually done and it did work. Before the bomb could be made however it was necessary for Fermi to prove the existence both of the chain reaction and of its ability to be controlled or to be allowed to run unabated. Fermi proved the existence of the (controlled) chain reaction by designing and constructing the world’s first nuclear reactor that went critical one evening in Chicago in December, 1942.
Although many, many nuclear reactors have been built since that day first to produce fissile materials and then to produce electric power the association of nuclear reactors with weapons of mass destruction has prevented most of the world with replacing fossil fuel fired electric power generating stations with nuclear powered ones. The red herring brought up when this state of affairs is mentioned is safety. In fact, nuclear electric power generation has produced a negligible number of fatalities in the last 60 years outside of the former Soviet Union. Even factoring in Chernobyl there is no comparing the danger of operating nuclear electric power plants with the danger to human life of mining coal in China, for example. The real issues are political. First there is the unfounded fear of safe operation and then there is the real political fear of weapons grade fissile material proliferation. These two fears have so far cancelled out the fact that efficient nuclear electric generating plants can be built today, based on thorium for example, rather than uranium, which will simply not be able to produce weapons grade materials.
Engineering a fuel cell based electric power generating system to power a vehicle has not proved as simple as designing and building an atomic weapon.
All fuel cells are based on the discovery, more than a century ago, that platinum group metals can catalyze chemical reactions (This means that they can participate in a chemical reaction without themselves being changed, so they are not used up. Gasoline, for example, is produced by the catalytic cracking, using platinum group metals, of long chain hydrocarbons in crude oil to produce the short chain more easily combusted mixtures known as gasoline).
Up until now the key uses of platinum group metals have been the production of gasoline and the control of automotive emissions, but it may well turn out that the most useful reaction catalyzed by platinum group metals occurs when hydrogen gas interacts with oxygen in the presence of a catalyst, such as platinum. The hydrogen is ionized on the surface of the platinum at room temperature. This means that it, the hydrogen molecule, loses electrons. If there is a source of oxygen handy then a hydrogen ion, called a proton, will react with it in these conditions to produce water. From the very first discovery of this phenomenon a simple “cell” was devised that carried away the free electrons and the water, so that, if hydrogen (fuel) were continuously added the cell would produce a current of electricity, and the waste exhausts would be simply and only water and heat..
There are now a multiplicity of designs for fuel cells utilizing a variety of materials and catalysts. The one that has been chosen for pilot production by General Motors, and most other car makers, is known as a proton exchange membrane fuel cell (PEM). This type has, among the designs that operate at temperatures below that of boiling water, the greatest power output and its operation is most easily regulated by the simplest and most reliable and available components.
Car makers, when choosing a power plant, must always consider first the control and continuous variation in (for fuel cells, electric) power flow needed for a personal vehicle as well as, in the case of a fuel cell, the maximum sustainable output of electricity from the cell that will not cause it to degrade or fail. Then they need to determine how to make a car that is propelled by an electric motor directly connected to each drive wheel perform and handle in exactly the same way as an equivalent car driven by an internal combustion engine turning a central drive shaft that is connected to either two or all four of the wheels through gearing and axles.
Also to be taken into account are engineering issues long resolved in contemporary internal combustion (by gasoline) driven cars such as the effect on dynamic mechanical components of turning sharply. In contemporary cars where engine power is delivered through transmission (connection) to a drive shaft a differential gear box distributes power so that axles don’t bend or break from differential stress when the car is turning. On an electric (fuel cell powered) car with individual motors driving each wheel a different arrangement is needed. This and other historical already solved problems must be solved again and so on.
Each solution to an engineering problem must be tested in a working model of a car. Thus the total system is built up slowly and must be certified as safe and reliable each time a new step is taken. The continuous history of vehicle mechanical engineering gives me confidence that mechanical (automotive) engineers can solve any problems of the type discussed above.
The major problem is with the power plant, the fuel cell, itself. To determine how far we are from replacing our fleet, which now operates using gasoline and diesel powered internal combustion engines, with a fleet powered by hydrogen burning fuel cells we need to identify the problems preventing the immediate replacement of the older power plant type by the newer.
The key to understanding this is to recognize that contemporary automobiles are powered by safe, reliable, efficient engines the main drawback of which is not mechanical it is environmental. This is a political issue, and it is requiring that the laws of physics and the properties of materials be tailored to meet a political goal. The fuel cell, like the nuclear power plant, may not today be the cheapest solution to a problem. It is however an actual solution to the problem of maintaining our life style while implementing a solution to the alleged anthropomorphic cause of the so-called problem of global warming. Unless we suddenly enter into a mini-ice age the political pressure on fossil fuel energy generation in this country will not abate any time soon.
Those of you who disagree with me must then explain to me why we use any fossil fuels at all to generate electricity in a nation on a continent that is rich with enough uranium and thorium to build all of the nuclear electric power plants we could ever need. In fact, I assert that if we had built a predominantly nuclear electric power generating industry in this country after World War II we might now be driving battery powered vehicles and riding in all electric mass transit and heating and cooling our homes and factories with electricity. The U.S. would have no global warming gases emitted at all, and Saudi Arabia and Iraq and Iran would be very poor countries. Many of you will scoff at this paragraph and say that’s it not so simple. I say that it is. The methods used for the mass production of energy have been dictated globally up until now solely by cost, not politics.
Fuel cells are a major first step in the development and implementation of the so-called “hydrogen economy” currently being touted by automakers such as GM as the next best thing (since hybrids) in order to try and keep you buying the big vehicles they make. What they are asking you to buy is the same car, truck, SUV or crossover that you have now except that it will be powered directly (i.e., power will be supplied to each axle separately-the car will have no central drive shaft) by electric motors that are connected to fuel cells that will produce electricity as it is needed by, hopefully, catalyzing the oxidation (burning) of hydrogen at room temperature, not explosively (i.e., the way it is currently utilized to produce power ), but rather by combining hydrogen (the fuel) and oxygen (from the air) on a (currently) platinum group metals mesh that will be the sump into which the chemical reaction pours electrons released by the reaction. The generation of power (electricity) will cease immediately when the hydrogen flow is interrupted just as the generation of power does in an internal combustion powered vehicle when the supply of gasoline is stopped.
A battery or a battery pack will be added to the system, so that the car can have a way to power itself for a short time if it runs out of fuel and to power its accessories when the fuel cell is not operating. The battery will be charged each time the driver hits the brakes and a trickle of electricity will also be diverted from the operating fuel cell to maintain the battery at full charge. The current intermediate between internal combustion and electric powered vehicles, the hybrid, is mainly a test-bed for rechargeable batteries and for studying the issues involved in the direct application of propulsive force to the drive wheels.
GM does not make fuel cells, and it currently has no place to do so, since it spun off Delphi [TSX:DEE]. Delphi today is unable to even start such a mass production program for a new component without a total financial commitment by a supplier. Visteon [NYSE:VC] has been essentially pronounced dead by its parent, Ford [NYSE:F]. My guess is that it will not be a company the core competency of which is batteries to which GM will turn when fuel cells have reached the mass production stage. I think that very sophisticated electronics companies such as Samsung and Sony are today will be the ultimate manufacturer of fuel cells for automotive use. Samsung has just surpassed Sony as the world’s largest manufacturer of electronic devices, but I believe, based on its past history, that Sony will learn its lesson from its quality and reliability mis-step with lithium-ion batteries and come roaring back.
Both Korea and Japan have now active government sponsored strategic metals stockpile programs that will allow the financial departments of their large electronics manufacturers to remain calm as prices, and real and artificial shortages, for the necessary raw materials for fuel cell manufacturing defeat American and European electrical and electronic component manufacturers. China has already demonstrated its plan to control its natural resources as well as any outside of China on which it can get its hands. If China should develop or acquire the technology to mass produce fuel cells then its domestic range of raw materials will give it the upper hand, because no matter which technology predominates China will have the deepest and broadest access to specialty raw materials.
The variables to be decided before the finalizing of the design of fuel cells for vehicle manufacturing are:
I. The fuel source:
On board chemical reforming of hydrocarbons (or, perhaps even ammonia) to produce hydrogen as needed;
Pressurized hydrogen in tank(s);
Hydrogen stored in solid solutions of hydrides and released by heat or pressure application.
II. The fuel cell catalyst:
Platinum group metal;
Platinum group metal, such as Rhenium and other metal, such as molybdenum;
Non platinum group metals.
III. The electric bus bar collection system to channel the electricity to the motors and storage battery system:
Copper;
Aluminium;
A room temperature superconducting alloy.
IV. The proton exchange membrane (PEM):
Teflon type;
Ceramic.
V. The structural materials to conduct the steam and any breakdown products from the PEM to the exhaust or to a safe capture.
The above development will take many, many years and billions and billions of dollars. GM’s announcement that it will produce and sell thousands of fuel cell vehicles in 2010 is simply an announcement of an ongoing experiment that will, accounted for on its own, lose money.
If you are still interested in investing in fuel cell development and production as a prequel to the hydrogen economy I suggest that you only look at companies that have demonstrated long-term survival that also currently make products that will probably be used on the ultimate fuel cell for vehicles.
Just as in the mining industry where juniors do the exploration, fuel cells will turn out to be an industry where innovators develop concepts and devise techniques but expensive mass production of safe reliable fuel cells on time will be the sole provenance of large companies with deep pockets and deeper talent pools.
My personal choices for long-term investment would be Phelps Dodge [NYSE:PD] for copper and molybdenum, Johnson-Matthey [LSE:JMAT] for platinum and rhenium, Alcoa [NYSE:AA] and the new Russian Aluminium giant for aluminium, ExxonMobil [NYSE:XOM] for on-board hydrocarbon reforming and freestanding hydrogen fuel stations, DuPont [NYSE:DD] for plastic and Corning [NYSE:GLW] for ceramic, PEMs, Samsung for fuel cell mass production, and GM, Toyota, DCX, Hyundai and a Chinese car maker or two, as manufacturers of the hydrogen burning fuel cell powered vehicles.
For those of you that listen to my advice I foresee a rosy future for your adult grandchildren who are not yet born.
http://www.resourceinvestor.com/pebble.asp?relid=24298
DETROIT (ResourceInvestor.com) -- There is no logical or rational basis for small investors to make short-term investments in fuel cell development or in any other aspect of the “hydrogen economy.” The time frame in which such investments would “pay off” may well be between one and two generations. This is the well reasoned conclusion of a distinguished panel of American scientists reported two years ago in a special issue of Science, the journal of the American Association for the Advancement of Science, themed “Toward a Hydrogen Economy” (Issue for 14 August, 2004).
Financial analysts and financial publicists don’t seem to worry much about such well reasoned conclusions.
The announcement by General Motors [NYSE:GM] last week that it will produce, for driving trials next year, 100 fuel cell powered Chevrolet Equinoxes, its subsequent delivery of a fuel cell powered vehicle for testing to the U.S. Army and its further announcement of a fuel cell powered minivan earlier this week set off a public relations driven flurry of stories about the “hydrogen economy.”
The development of a safe, reliable fuel cell for vehicle applications is under way at every level, from large intensive programs to simple study ones, at all of the world’s OEM car makers. Many private companies both large GE [NYSE:GE], and small, Ballard [TSX:BLD], are also independently trying to develop a commercially viable fuel cell, and there are such programs also at many universities. It is very early in the development of fuel cells as mass produced power plants for vehicles. Yet the New York Times “Automobiles” section published a lead story called “Prequel to a Hydrogen Future: Driving G.M.’s Fuel Cell Prototype” on September 24, 2006.
Although American politicians, acting mainly to reduce pressure from their constituents that they do something about global warming, have proposed initiatives to provide federal funding to “study” and “promote” alternative fuel technology and, in particular, the development of a “hydrogen economy” there is, in fact, no Manhattan Project under way to develop the key elements of a hydrogen economy, because such a move is not (yet) perceived as a an response to an imminent threat to life and health.
The economic magnitude of a full scale conversion from fossil fuel to hydrogen as the basis of our energy production would be enormous. Such a conversion would proclaim and manifest itself as a structural change not only in the global energy industry but also in the global mining, manufacturing, automotive and fuel production and service industries. Vested interests in all of these industries and more would fight such a switch tooth and nail. Nations, such as Saudi Arabia, the economies of which are one trick ponies, based solely on the recovery and sale of fossil fuels, could simply fail and collapse into what used to be called third world status rapidly. The vested interests and the endangered nation-states will battle the development of the hydrogen economy every step of the way.
During World War II the United States, with Great Britain as (the only) invited guest participant, designed, instituted and implemented the greatest industrial research and development project in the history of mankind. With no limitations whatsoever on its budget, demand for energy, or on its draw of strategic (for the war effort) raw materials the project’s goal was to develop and implement a way to manufacture in quantity two isotopes of elements that were then considered rare and exotic. One of these isotopes, Uranium 235, existed in nature as 0.7% of natural uranium. The other, plutonium 233, did not exist in nature, but had been discovered only at the very beginning of the time period that the Manhattan Project came into existence.
A tiny cadre of physicists, mathematicians and chemists working only with slide rules, hand operated adding machines, and their brains had predicted that if a sufficient quantity of either of these isotopes could be assembled in a small volume then a reaction could be initiated with a simple neutron “trigger’ that would cause as much as 1% or 2% of the mass of either of them to be very rapidly converted into energy. The resulting explosion, of the minimum amount necessary, would be equivalent to, at least, 20,000 tonnes of TNT, and could conceivably destroy an entire city or damage a port beyond repair. At least this is what Albert Einstein said was possible in a famous letter to President Franklin D. Roosevelt in 1940. It had only been 35 years earlier than the drafting of that famous letter that Einstein, himself, had discovered the relationship between matter and energy that allowed physicists to predict the size of the explosion that would result from the nuclear fission of the “fissile” isotopes of uranium or plutonium.
Fission itself had only been observed and described in the 2 years previous to Einstein’s letter. And, when the letter was written, no one knew exactly how to make a deliverable bomb utilizing fission even if one had the fissile material in sufficient quantity. All of the scientists in the know did agree that it was possible in principal.
So, we had a situation where less than, perhaps 25 American, British and other European men (and one woman) who were firmly on the side of the wartime coalition, which America joined, to fight the German and Japanese militarist regimes, had such stature among politicians that their supposition that the project was do-able in principal convinced Franklin D. Roosevelt and Winston Churchill to dedicate enormous strategic resources of scientific, engineering and skilled manpower as well as resources of energy and metals to finding out if an atomic bomb could be built, and if so, to building not just one bomb but an assembly line for them.
The impetus for the Manhattan Project was simple. The two western leaders were convinced that if they didn’t commit to the project and their enemies did then if the project were successful the enemies would win the war by the threat of or actual annihilation of America and Britain and any and all of their allies.
Before you invest in fuel cell development or any part of the development of a hydrogen economy to replace the one we currently have, which is a global (energy) economy that gets its energy primarily and overwhelmingly from the burning of fossil fuels, ask yourself what is the driving force behind such a change?
There are two answers. The original impetus for a switch from fossil fuels to “hydrogen” was the reduction of pollution deemed injurious to health and habitat. That impetus has been joined during the last decade by a growing fear that the world is warming due to anthropogenic (i.e., man made) causes mainly from the burning of fossil fuels. This global warming it is feared will disrupt the world’s agricultural economy and produce dangerous weather extremes and eventually make conditions on earth unsuitable for sustaining human life. These reasons are not life threatening in the immediate or even in the near future. Therefore there is today no urgent pressure on national governments to create a Manhattan Project to bring about the profound and fundamental change that would result from the switch from a fossil fuel to hydrogen burning energy economy. There is also today no group of scientists with the stature necessary to, on their say-so alone, cause politicians to focus a major part of a nation’s economy on converting from fossil fuels to a hydrogen economy.
The mathematics of the design of an atomic bomb is deceptively simple. The story is told that the great experimental physicist, Enrico Fermi, scribbled on the back of an envelope and came up with a fair estimate of how much U235 would be needed to make a weapon. He had originally measured experimental values on the absorption of neutrons by U235 in the mid 1930s, but he had missed the discovery of fission. On the eve of the war a brilliant woman, Lise Meitner, had correctly explained the production of barium in experiments such as Fermi’s as resulting from the nuclear fission of uranium, and the resulting possibility of a chain reaction had been proposed. It quickly became clear to the specialized scientific community that a weapon of enormous power was possible.
The first idea was to build a gun type bomb where two halves of a critical mass of uranium would be driven together at high speed, by firing one half into the other inside of a gun barrel, to form momentarily a critical mass, which would then be triggered to undergo a self sustaining chain reaction. This was exactly what was eventually done and it did work. Before the bomb could be made however it was necessary for Fermi to prove the existence both of the chain reaction and of its ability to be controlled or to be allowed to run unabated. Fermi proved the existence of the (controlled) chain reaction by designing and constructing the world’s first nuclear reactor that went critical one evening in Chicago in December, 1942.
Although many, many nuclear reactors have been built since that day first to produce fissile materials and then to produce electric power the association of nuclear reactors with weapons of mass destruction has prevented most of the world with replacing fossil fuel fired electric power generating stations with nuclear powered ones. The red herring brought up when this state of affairs is mentioned is safety. In fact, nuclear electric power generation has produced a negligible number of fatalities in the last 60 years outside of the former Soviet Union. Even factoring in Chernobyl there is no comparing the danger of operating nuclear electric power plants with the danger to human life of mining coal in China, for example. The real issues are political. First there is the unfounded fear of safe operation and then there is the real political fear of weapons grade fissile material proliferation. These two fears have so far cancelled out the fact that efficient nuclear electric generating plants can be built today, based on thorium for example, rather than uranium, which will simply not be able to produce weapons grade materials.
Engineering a fuel cell based electric power generating system to power a vehicle has not proved as simple as designing and building an atomic weapon.
All fuel cells are based on the discovery, more than a century ago, that platinum group metals can catalyze chemical reactions (This means that they can participate in a chemical reaction without themselves being changed, so they are not used up. Gasoline, for example, is produced by the catalytic cracking, using platinum group metals, of long chain hydrocarbons in crude oil to produce the short chain more easily combusted mixtures known as gasoline).
Up until now the key uses of platinum group metals have been the production of gasoline and the control of automotive emissions, but it may well turn out that the most useful reaction catalyzed by platinum group metals occurs when hydrogen gas interacts with oxygen in the presence of a catalyst, such as platinum. The hydrogen is ionized on the surface of the platinum at room temperature. This means that it, the hydrogen molecule, loses electrons. If there is a source of oxygen handy then a hydrogen ion, called a proton, will react with it in these conditions to produce water. From the very first discovery of this phenomenon a simple “cell” was devised that carried away the free electrons and the water, so that, if hydrogen (fuel) were continuously added the cell would produce a current of electricity, and the waste exhausts would be simply and only water and heat..
There are now a multiplicity of designs for fuel cells utilizing a variety of materials and catalysts. The one that has been chosen for pilot production by General Motors, and most other car makers, is known as a proton exchange membrane fuel cell (PEM). This type has, among the designs that operate at temperatures below that of boiling water, the greatest power output and its operation is most easily regulated by the simplest and most reliable and available components.
Car makers, when choosing a power plant, must always consider first the control and continuous variation in (for fuel cells, electric) power flow needed for a personal vehicle as well as, in the case of a fuel cell, the maximum sustainable output of electricity from the cell that will not cause it to degrade or fail. Then they need to determine how to make a car that is propelled by an electric motor directly connected to each drive wheel perform and handle in exactly the same way as an equivalent car driven by an internal combustion engine turning a central drive shaft that is connected to either two or all four of the wheels through gearing and axles.
Also to be taken into account are engineering issues long resolved in contemporary internal combustion (by gasoline) driven cars such as the effect on dynamic mechanical components of turning sharply. In contemporary cars where engine power is delivered through transmission (connection) to a drive shaft a differential gear box distributes power so that axles don’t bend or break from differential stress when the car is turning. On an electric (fuel cell powered) car with individual motors driving each wheel a different arrangement is needed. This and other historical already solved problems must be solved again and so on.
Each solution to an engineering problem must be tested in a working model of a car. Thus the total system is built up slowly and must be certified as safe and reliable each time a new step is taken. The continuous history of vehicle mechanical engineering gives me confidence that mechanical (automotive) engineers can solve any problems of the type discussed above.
The major problem is with the power plant, the fuel cell, itself. To determine how far we are from replacing our fleet, which now operates using gasoline and diesel powered internal combustion engines, with a fleet powered by hydrogen burning fuel cells we need to identify the problems preventing the immediate replacement of the older power plant type by the newer.
The key to understanding this is to recognize that contemporary automobiles are powered by safe, reliable, efficient engines the main drawback of which is not mechanical it is environmental. This is a political issue, and it is requiring that the laws of physics and the properties of materials be tailored to meet a political goal. The fuel cell, like the nuclear power plant, may not today be the cheapest solution to a problem. It is however an actual solution to the problem of maintaining our life style while implementing a solution to the alleged anthropomorphic cause of the so-called problem of global warming. Unless we suddenly enter into a mini-ice age the political pressure on fossil fuel energy generation in this country will not abate any time soon.
Those of you who disagree with me must then explain to me why we use any fossil fuels at all to generate electricity in a nation on a continent that is rich with enough uranium and thorium to build all of the nuclear electric power plants we could ever need. In fact, I assert that if we had built a predominantly nuclear electric power generating industry in this country after World War II we might now be driving battery powered vehicles and riding in all electric mass transit and heating and cooling our homes and factories with electricity. The U.S. would have no global warming gases emitted at all, and Saudi Arabia and Iraq and Iran would be very poor countries. Many of you will scoff at this paragraph and say that’s it not so simple. I say that it is. The methods used for the mass production of energy have been dictated globally up until now solely by cost, not politics.
Fuel cells are a major first step in the development and implementation of the so-called “hydrogen economy” currently being touted by automakers such as GM as the next best thing (since hybrids) in order to try and keep you buying the big vehicles they make. What they are asking you to buy is the same car, truck, SUV or crossover that you have now except that it will be powered directly (i.e., power will be supplied to each axle separately-the car will have no central drive shaft) by electric motors that are connected to fuel cells that will produce electricity as it is needed by, hopefully, catalyzing the oxidation (burning) of hydrogen at room temperature, not explosively (i.e., the way it is currently utilized to produce power ), but rather by combining hydrogen (the fuel) and oxygen (from the air) on a (currently) platinum group metals mesh that will be the sump into which the chemical reaction pours electrons released by the reaction. The generation of power (electricity) will cease immediately when the hydrogen flow is interrupted just as the generation of power does in an internal combustion powered vehicle when the supply of gasoline is stopped.
A battery or a battery pack will be added to the system, so that the car can have a way to power itself for a short time if it runs out of fuel and to power its accessories when the fuel cell is not operating. The battery will be charged each time the driver hits the brakes and a trickle of electricity will also be diverted from the operating fuel cell to maintain the battery at full charge. The current intermediate between internal combustion and electric powered vehicles, the hybrid, is mainly a test-bed for rechargeable batteries and for studying the issues involved in the direct application of propulsive force to the drive wheels.
GM does not make fuel cells, and it currently has no place to do so, since it spun off Delphi [TSX:DEE]. Delphi today is unable to even start such a mass production program for a new component without a total financial commitment by a supplier. Visteon [NYSE:VC] has been essentially pronounced dead by its parent, Ford [NYSE:F]. My guess is that it will not be a company the core competency of which is batteries to which GM will turn when fuel cells have reached the mass production stage. I think that very sophisticated electronics companies such as Samsung and Sony are today will be the ultimate manufacturer of fuel cells for automotive use. Samsung has just surpassed Sony as the world’s largest manufacturer of electronic devices, but I believe, based on its past history, that Sony will learn its lesson from its quality and reliability mis-step with lithium-ion batteries and come roaring back.
Both Korea and Japan have now active government sponsored strategic metals stockpile programs that will allow the financial departments of their large electronics manufacturers to remain calm as prices, and real and artificial shortages, for the necessary raw materials for fuel cell manufacturing defeat American and European electrical and electronic component manufacturers. China has already demonstrated its plan to control its natural resources as well as any outside of China on which it can get its hands. If China should develop or acquire the technology to mass produce fuel cells then its domestic range of raw materials will give it the upper hand, because no matter which technology predominates China will have the deepest and broadest access to specialty raw materials.
The variables to be decided before the finalizing of the design of fuel cells for vehicle manufacturing are:
I. The fuel source:
On board chemical reforming of hydrocarbons (or, perhaps even ammonia) to produce hydrogen as needed;
Pressurized hydrogen in tank(s);
Hydrogen stored in solid solutions of hydrides and released by heat or pressure application.
II. The fuel cell catalyst:
Platinum group metal;
Platinum group metal, such as Rhenium and other metal, such as molybdenum;
Non platinum group metals.
III. The electric bus bar collection system to channel the electricity to the motors and storage battery system:
Copper;
Aluminium;
A room temperature superconducting alloy.
IV. The proton exchange membrane (PEM):
Teflon type;
Ceramic.
V. The structural materials to conduct the steam and any breakdown products from the PEM to the exhaust or to a safe capture.
The above development will take many, many years and billions and billions of dollars. GM’s announcement that it will produce and sell thousands of fuel cell vehicles in 2010 is simply an announcement of an ongoing experiment that will, accounted for on its own, lose money.
If you are still interested in investing in fuel cell development and production as a prequel to the hydrogen economy I suggest that you only look at companies that have demonstrated long-term survival that also currently make products that will probably be used on the ultimate fuel cell for vehicles.
Just as in the mining industry where juniors do the exploration, fuel cells will turn out to be an industry where innovators develop concepts and devise techniques but expensive mass production of safe reliable fuel cells on time will be the sole provenance of large companies with deep pockets and deeper talent pools.
My personal choices for long-term investment would be Phelps Dodge [NYSE:PD] for copper and molybdenum, Johnson-Matthey [LSE:JMAT] for platinum and rhenium, Alcoa [NYSE:AA] and the new Russian Aluminium giant for aluminium, ExxonMobil [NYSE:XOM] for on-board hydrocarbon reforming and freestanding hydrogen fuel stations, DuPont [NYSE:DD] for plastic and Corning [NYSE:GLW] for ceramic, PEMs, Samsung for fuel cell mass production, and GM, Toyota, DCX, Hyundai and a Chinese car maker or two, as manufacturers of the hydrogen burning fuel cell powered vehicles.
For those of you that listen to my advice I foresee a rosy future for your adult grandchildren who are not yet born.
http://www.resourceinvestor.com/pebble.asp?relid=24298