TRANSFER SHEET FOR MANUFACTURING ELECTRODE-POLYELECTROLYTE MEMBRANE JUNCTION, ELECTRODE-POLYELECTROLYTE MEMBRANE JUNCTION AND THEIR MANUFACTURING METHODS

摘要

PROBLEM TO BE SOLVED: To provide an electrode-electrolyte membrane junction which has small interface resistance value between a catalyst layer and an electrolyte membrane of a fuel cell and can supply the fuel and oxidizer sufficiently.

SOLUTION: The transfer sheet has (1) a metal catalyst carrying carbon particle layer and (2) an electrode catalyst layer laminated in order on one direction of the substrate, and the electrode catalyst layer is constructed of a metal catalyst carrying carbon particles and a polyelectrolyte, and a gradient is provided in the concentration of metal catalyst carrying carbon particle and the polyelectrolyte so that the content ratio of the polyelectrolyte may be gradually reduced and the content ratio of the metal catalyst carrying carbon particle may be gradually increased. By using a transfer sheet, the interface resistance value between the catalyst layer and the electrolyte membrane is small, and an electrode-electrolyte membrane assembly which can supply the fuel and the oxidizer sufficiently can be manufactured.

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