Energy 101: Fuel Cell Technology

Learn how fuel cell technology generates clean electricity from hydrogen to power our buildings and transportation—while emitting nothing but water. This video illustrates the fundamentals of fuel cell technology and its potential to supply our homes, offices, industries, and vehicles with sustainable, reliable energy.
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[keprf]

"Without any combustion". When hydrogen is in the presence of Oxygen, a combustion takes place. Were the writers even briefed on well known facts of science?

[rebekkanicol]

Very informational made me a little dizzy 😍😘

[albertobaylon]

Anything with car with end up the same thing. Find another application other than car which can benefit a lot of people.

[alexandrat]

who else watching dis for professor brooks class lms

[theevermind]

Fuel cells are stupid. The energy needed to manufacture the hydrogen defeats all the benefits of the fuel cell.

Hydrogen is not an "energy source, " it is energy storage. We have no natural supply of hydrogen gas and instead have to use another energy source to manufacture the hydrogen. Nearly all hydrogen currently comes from reforming natural gas, but that process produces just as much CO2 as burning the natural gas. Electrolysis (splitting water) requires electricity to already exist, but the process is inefficient and throws away a third of that initial electricity in just the first step. Overall, it is about 1/4 the efficiency as just putting the electricity into a battery.

The only place hydrogen has a real benefit is for planes, drones, or other flying devices. Hydrogen has an excellent energy to weight ratio, meaning a plane fueled by hydrogen may be able to carry more cargo since its fuel weighs less. Every other application, like cars or power backup for buildings, are better and more cheaply served by batteries.

[ericmeacham]

I've been thinking about Nitrogen recently, and I wonder if Nitrogen can also be used as an Energy source and produce Oxygen as a waste product . Being air is 78% Nitrogen and almost 20% Oxygen, I wonder if Physics can reverse engineer what occurs when lightening strikes .
America ~ Land of the Free & the Brave .

[JoeHeine]

This is foolish. Hydrogen requires alot of energy to be made in the first place. The video says it itself, it's "energy storage" not an "energy source".