I know this is an old post but it needs clarity. safety first, a generator never produces pure hydrogen, there are ALWAYS oxygen molecules in the stream so you have to be very careful because that explosive. The stream has to go thru a dryer and high heat to become pure. Pure hydrogen is very safe and can be compressed, un-pure compressed hydrogen is EXPLOSIVE.
One question was; how do you gain anything by using electricity to produce hydrogen as a fuel due to loss transmuting 1 power to another? Hydrogen has 1.5 times the energy of gasoline AND a generator is producing power in braking and down-hill situations similar to smart cars.
One question was: what is the mix ratio of potassium hydroxide (lye) to water? 26% KOH by weight. You adjust the voltage/amps to the mixture not the mixture to the volt/amps
Another question was; what PH? ph has to be close to 13 not 7. Or if you're going acidic it must be around 3. I like to go high, it's safer.
Stainless steel electrodes? if you look at stainless under a microscope you will see crystals, some of those crystal are Iron and this is what makes your solution dirty because the electron flow will attack the Iron but not the Chromium, the higher the purity of the stainless means less trash in the solution.
Another question was about sonic vibration, this will split hydrogen even without electrical power but is EXTREMELY dangerous and can explode without warning as can hydrogen produced by dissolving aluminum.
1 more point, when fooling around with acids or bases always add the acid or base to water never the other way around and add it very slowly.
if anyone is still interested in this subject I will continue.