Honda Motor Co., Ltd.

Jsr Corporation

Takanobu Yamamoto

Hiroshi Shinkai

Kaoru Fukuda

Ryoichiro Takahashi

Junji Kawai

Toshihiro Ohtsuki

Satoshi Komatsu

The present invention provides an electrode catalyst layer comprising catalyst particles, an ion exchange resin and a water repellent agent. The water repellent agent contains (A) a fluorine-containing copolymer having a structure unit derived from a polyfluoroalkyl-containing (meth)acrylate and/or (B) a fluorine-containing copolymer having a structural unit represented by derived from a fluorine-containing olefin monomer and a structure unit represented derived from a vinyl ether monomer. The electrode catalyst layer contains 0.1 to 20% by weight of the water repellant agent. The electrode catalyst layer exhibits excellent balance between water retention and drainage in an electrode, good power generation performance under any of low humidity and high humidity conditions, and also excellent durability in power generation.

Electrode catalyst layer

Growing community of inventors

Chuo-ku, Japan

Takanobu Yamamoto