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You hear the word biofuel, and the first things that may come to mind are the cars run on fry grease that make the local news every time gasoline breaks $3 a gallon. But what are some of the non-automotive uses for biofuel?
Instead of burning fuel like conventional engines, hydrogen fuel cells work through an electrochemical process. To produce electricity, hydrogen atoms are ionized on one side of an electrolyte membrane. How much do you know about hydrogen fuel cells?