lets back to the subject
hydrogen and metal in water... they react ... hydrogen lose electrons and get absorbed on the surface of the metal giving to it a potential in reference to the solution of -1.23 v
when we get electrolysis happen this capacitive charge ruin the efficiency... because it requires 1,23 joules for each coulomb you try to transfer between the electrodes...
in my stupid opinion, if we really want to get cheap hydrogen we need to find a way to cancel this 1,23 volts difference while maintaining the electrolysis happening
applying 1,23 volts would result in 100% efficient electrolysis but i wont proceed because the capacitance is charged..
well in my opinion we just need to charge the anode with the same negative voltage somehow to be able to get a lower voltage between the capacitor plates and thereto be able to apply current without so much voltage...
the only way i´m seeing to do it would be to make the hydrogen charge the anode by arranging the anode over the cathode and so the bubbles are forced to pass thru it...
the anode could be platinum but if it were platinum hydrogen would combuste with the oxygen there being also generated making it glow red hot like the catalytic converter of your car.. so stan said that platinum could not be used as it would "breakdown under the conditions required for the operation of the fuel cell" that was something that have away puzzled me... how platinum would break down.. it does not, it makes hydrogen and oxygen reform! well i bet stailess steel wont!
i´m not sure if the electolyte must be acid or base but one of them should do something...
today i plan to do some experiments using aluminum to generate hydrogen into a hydrocloric solution and having one electrode over it to see the potential in reference to a paladium electrode that i have..
the main idea is to simple cancel the voltage that appear between anode and cathode..
the second goal is a manner to generate extremely low voltages at huge amps
i plan doing it with some sort of stepdown colapsing pulse transformer... the idea is to generate milivolts on the secondary and allow the collapse to get this milivolts into the volts range... a collapsing transformer will elevate the voltage until the current has a way to go and make thru the circuit..
other ways i see is witha faraday disk, or even a modified dc motor with permanent magnets and brush running at very low speed..
perhaps we could use gallium as a contact metal since its liquid at low temps...
a third way to generate this low voltage at high amps is to build a magnetohydrodynamic generator using gallium... so it can transform mechanical energy directly to low voltage at very high efficiency! the problem is that 20ml cost 100 dollars here and just to pump it would require some more amount...
to make a magneto hydrodynamic generator is not hard all you need is to force the galium into a magnetic channel having electrodes to capture the amps... the voltage is proportional to the speed, lenght of the magnetic field / electrodes and magnetic field intensity...
the major problem is to design the system to have a nice flow of the galium at enough speed...
it can even convert electricity into a lower voltage electricity depending on the arrangement