Abstract
A direct alcohol fuel cell (DAFC) that uses methanol or ethanol as a fuel includes a membrane electrode assembly in which an anode, an electrolyte membrane, and a cathode are stacked, a fuel chamber in which alcohol is stored, and a fuel supply system that supplies the alcohol to the anode from the fuel chamber, wherein the fuel supply system comprises: a spreader that allows the alcohol received from the fuel chamber to be uniformly distributed with respect to an entire surface of the anode; a supply control unit that controls the supply of the alcohol from the fuel chamber to an inlet of the spreader; and a buffer installed between the spreader and the anode to limitedly pass alcohol towards the anode. Accordingly, the DAFC can reduce unnecessary fuel consumption during a shutdown operation and can stably and uniformly supply fuel during a normal operation.
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