What are the bad effects of hydrogen fuel or fuel cells?
Question by jnggystrd: What are the bad effects of hydrogen fuel or fuel cells?
In layman’s term please.. And if possible, not in paragraph form. Thank you. 
Best answer:
Answer by geoweeg
Explosivity.
GM had a fully functioning hydrogen fuel cell platform available 10 years ago. The only emission from it was water (H2O). The problem is that hydrogen is very explosive (picture the Hindenburg burning). So the problem was how to make the fuel more stable. As of this point no one has figured that problem out.
Know better? Leave your own answer in the comments!
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about 1 year ago
Hydrogen is also very difficult to obtain as getting it from electrolysis uses more energy than the energy it releases
about 1 year ago
Hydrogen is gaseous, it takes up a lot of space, compressed at 2,200 psi (150 bar), it still takes up 20 times the space of the same amount of energy in gasoline. Think about it, it would be the same as having a car with only a half gallon fuel tank. They are talking about designing high tech carbon fiber pressure tanks to hold it at 10,000 psi but even then it will take up 5 times the space of an equivalent gas tank plus it will be much more expensive and dangerous and besides that would just mean it would be the same as having a 2 gallon fuel tank. Of course, what will happen is that they will just have much much larger fuel tanks and less cargo space.
Keep in mind that hydrogen, batteries, gasoline and diesel are all just energy chemically stored. The holy grail of fuel cell research is to be able to use gasoline in a fuel cell not hydrogen. Hydrogen is just the simplest and hence the first one that we came up with. The only thing bad about gasoline is that we refine it from fossil reserves. We can make gasoline from CO2 and H2O in which case it would meet the same goal of hydrogen fuel cells in that the source of energy could be shifted from fossil reserves to clean sources like solar and wind and we wouldn’t have to manufacture millions of new vehicles to do it.