Honda Motor Co., Ltd.

Ryohei Ishimaru

Nagayuki Kanaoka

Masaaki Sakano

Masaru Oda

Hiroshi Sohma

Takaki Nakagawa

Shunsuke Itami

A fuel cell is formed by sandwiching a membrane electrode assembly between a first separator and a second separator. The membrane electrode assembly includes a cathode, an anode, and a solid polymer electrolyte membrane interposed between the cathode and the anode. In the membrane electrode assembly, a catalyst area of an electrode catalyst layer of the cathode and an electrode catalyst layer of the anode terminates at a position spaced upwardly from lower ends of an oxygen-containing gas flow field and a fuel gas flow field.

Solid polymer electrolyte fuel cell

A membrane-electrode assembly for a solid polymer electrolyte fuel cell is provided that uses a proton conductive membrane having high proton conductivity and also superior heat resistance and chemical durability. A membrane-electrode assembly for a solid polymer electrolyte fuel cell is provided with an anode on one side of a proton conductive membrane and a cathode on another side thereof, and the proton conductive membrane is a sulfonated polyarylene containing a structure expressed by the general formula (1) below:&#x2014;R&#x2014;Z&#x2014;R&#x2003;&#x2003;(1)In the formula (1), Z represents at least one structure selected from the group consisting of &#x2014;CO&#x2014;, &#x2014;SO&#x2014;, and &#x2014;SO&#x2014;; Rrepresents a direct bond or any divalent organic group; and Rrepresents a nitrogen-containing heterocyclic group.

Membrane-electrode assembly for solid polymer electrolyte fuel cell

A membrane-electrode assembly for solid polymer electrolyte fuel cell that exhibits superior dimensional stability to high temperature of hot water generated on power generation, and that has both excellent power generation performance and durability in a low temperature environment is provided. According to the membrane-electrode assembly for solid polymer electrolyte fuel cell in which a polyarylene-based copolymer having a specific repeating constitutional unit is used as a proton conductive membrane, the membrane-electrode assembly for solid polymer electrolyte fuel cell that exhibits superior dimensional stability to high temperature of hot water generated on power generation, and that has both excellent power generation performance and durability in a low temperature environment can be provided.

Growing community of inventors

Sumida-ku, Japan

Ryohei Ishimaru