Catalyst layer for fuel cell membrane electrode assembly, fuel cell membrane electrode assembly using the catalyst layer, fuel cell, and method for producing the catalyst layer

摘要

A catalyst layer for a fuel cell membrane electrode assembly includes a plurality of agglomerates, adjacent ones of the plurality of agglomerates contacting with each other with pores provided between said adjacent ones of the plurality of agglomerates, each of the plurality of agglomerates being formed by packing a plurality of catalysts each consisting of noble metal fine particles supported on a fiber-like support material, adjacent ones of the plurality of catalysts contacting with each other with pores provided between said adjacent ones of the plurality of catalysts, and each of the plurality of catalysts contacting with a plurality of catalysts other than said each catalyst at a plurality of contact points. This allows providing a catalyst layer, a fuel cell membrane electrode assembly, and a fuel cell, each of which has compact size and excellent power generation performance, and a method for producing the same.

主权项

1. A catalyst layer for a fuel cell membrane electrode assembly, the catalyst layer comprising:
a plurality of agglomerates, adjacent ones of the plurality of agglomerates contacting with each other with pores provided between said adjacent ones of the plurality of agglomerates, wherein each of the plurality of agglomerates having a plurality of catalysts packed together, each of the plurality of catalysts consisting of noble metal fine particles supported on a fiber-like support material, wherein the catalysts packed in the agglomerates are positioned in a network manner, wherein adjacent ones of the plurality of catalysts being in contact with each other with pores provided between said adjacent ones of the plurality of catalysts, and wherein any given one of the catalysts of the plurality of catalysts contacts one or more other catalysts of the plurality of catalysts.