Difference between fuel cell and battery is given bellow: Battery Fuel Cell 1) Battery is a close system. Fuel cell is open system. 2) Chemical Changes occurs There is no change in chemical composition of electrolyte. 3) Fuel supply intermittent. Fuel supply continuous. 4) No isothermal reaction inside. Isothermal reaction inside. 5) Supply power for definite length of time. Fuel cell supply power for indefinite length of time.
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