Can you explain what is the feulcell to convert biogas into electricity

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Fuel cells are remarkable electrochemical devices that convert chemical energy directly into electrical energy. Unlike batteries that store energy internally, fuel cells operate continuously as long as fuel and oxidant are supplied. The basic fuel cell consists of three main components: an anode where fuel is oxidized, a cathode where oxygen is reduced, and an electrolyte that allows ion transport between the electrodes. When fuel enters the anode and oxygen enters the cathode, electrochemical reactions generate electricity that flows through an external circuit.