Polymer electrolyte fuel cell and production method thereof

摘要

Disclosed is a fuel cell comprising: a hydrogen-ion conductive polymer electrolyte membrane; a pair of electrodes sandwiching the hydrogen-ion conductive polymer electrolyte membrane; a first separator plate having a gas flow path for supplying a fuel gas to one of the electrodes; and a second separator plate having a gas flow path for supplying an oxidant gas to the other of the electrodes, wherein each of the electrodes has an electrode catalyst layer comprising at least a conductive carbon particle carrying an electrode catalyst particle and a hydrogen-ion conductive polymer electrolyte, the electrode catalyst layer being in contact with the hydrogen-ion conductive polymer electrolyte membrane, and at least one of the electrodes comprises a catalyst for trapping the fuel gas or the oxidant gas which has passed through the hydrogen-ion conductive polymer electrolyte membrane from the other electrode toward the electrode catalyst layer of the one of the electrodes. The catalyst for trapping the fuel gas or the oxidant gas is preferably a catalyst for promoting the reaction of hydrogen and oxygen to produce water. The fuel cell of this invention can suppress deterioration of the hydrogen-ion conductive polymer electrolyte in the hydrogen-ion conductive polymer electrolyte membrane and the catalyst layers.