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Is it possible to use liquid hydrogen in a fuel cell?

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Dirk Patze's response is accurate. I'd like to elaborate a bit more on a few points. The performance of the proton exchange membrane in a fuel cell improves with higher temperatures. So, typical fuel cell operating temperatures are set as high as possible without damaging the membrane. read more

Hydrogen vehicles such as buses require longer range capabilities and longer hours of operation than other vehicles and liquid hydrogen fuel meets these requirements. Even though liquid hydrogen tanks can store more in a given volume than compressed hydrogen tanks and liquid hydrogen carries more energy density than gaseous hydrogen, there are some downsides to using liquid hydrogen to power large vehicles. read more

Fuel cells operate best on pure hydrogen. But fuels like natural gas, methanol, or even gasoline can be reformed to produce the hydrogen required for fuel cells. Some fuel cells even can be fueled directly with methanol, without using a reformer. In the future, hydrogen could also join electricity as an important energy carrier. read more

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Hydrogen Energy and Fuel Cell Technology
www.renewableenergyworld.com

Liquid Hydrogen Fuel
www.hydrogencarsnow.com