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Hydrogen fuel

Hydrogen fuel is a zero carbon fuel burned with oxygen. It can be used in fuel cells or internal combustion engines. It has begun to be used in commercial fuel cell vehicles, such as passenger cars, and has been used in fuel cell buses for many years. It is also used as a fuel for spacecraft propulsion.

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44,774
Prior Five Years
15,459
Total Citations
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1,114,321
Prior Five Years
286,558
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65,293
Prior Five Years
56,673

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