MEMBRANE/ELECTRODE BINDER FOR DIRECT METHANOL FUEL CELL

摘要

PROBLEM TO BE SOLVED: To provide a membrane/electrode binder capable of contributing to increase in output of a direct methanol fuel cell. SOLUTION: In this membrane/electrode binder body for the direct methanol fuel cell, a negative electrode and a positive electrode are connected together via an electrolyte membrane formed of a proton conductive solid polymer membrane. A negative electrode side separator having a flow passage groove for supplying a methanol solution as a fuel is arranged in the negative electrode. A positive electrode side separator having a flow passage groove for supplying air as an oxidant gas is arranged in the positive electrode. A rugged part is arranged in a binding interface with the electrolyte membrane in at least one of the negative electrode and the positive electrode.