A Miniature Biofuel Cell

A biofuel cell, consisting of two 7-ím diameter, 2-cm long carbon fibers and operating at ambient temperature in a pH 5 aqueous solution is described. The areas of the anode and the cathode of the cell are 60 times smaller than those of the smallest reported (methanol oxidizing) fuel cell1 and 180 times smaller than those of the smallest area biofuel cell.2 The power density of the cell exceed…