Patent ID: 9735433
Date: 2017-08-15
CPC Classifications: H01M,Y02E

Claim:
1. A fuel cell comprising: a proton-conducting electrolyte membrane sandwiched between a pair of catalyst layers and a separate pair of gas diffusion layers, wherein at least a catalyst layer of a cathode comprises a catalyst ingredient, an electrolyte material, and a carbon material, the carbon material comprising: a catalyst-supporting carbon material supporting the catalyst ingredient, a conductivity-aiding carbon material not supporting the catalyst ingredient, and a gas-diffusing carbon material not supporting the catalyst ingredient; and wherein the catalyst layer of the cathode comprises: catalyst aggregates, each of which comprising the catalyst-supporting carbon material supporting the catalyst ingredient, the electrolyte material, and the conductivity-aiding carbon material not supporting the catalyst ingredient as main ingredients aggregated together, and gas-diffusing carbon material aggregates, each of which comprising the gas-diffusing carbon material not supporting the catalyst ingredient as a main ingredient aggregated together which is free of a fluorinated compound, wherein the catalyst aggregates connect by direct contact to form a continuous matrix, and the gas-diffusing carbon material aggregates are dispersed in the matrix of the catalyst aggregates.