Induction of In-plane Current at Start-and-Stop Operations on a PEFC

摘要

In-plane induction currents in electrodes and bipolar plates by reactant fed into a PEFC were evaluated using a 20-segmented cell. When hydrogen was fed into an anode in the condition of anode (negative electrode) and cathode (positive electrode) exposed air, in-plane currents were detected in both electrodes in spite of the open-circuit condition. In-plane currents of anode and cathode in each segment had opposite directions from each other and nearly equal quantity. Simultaneously, carbon dioxide and oxygen were also detected in the cathode exhaust.