Patent ID: 8148026
Filing Date: 2012-04-03
Classification: H01M,Y02E

Abstract:
1. A multi-layered electrode for fuel cell comprising: a gas diffusing layer; a catalyst layer located on the gas diffusing layer, the catalyst layer formed from a catalyst slurry comprising 20˜60 wt % of a Pt/C catalyst and 5 wt % or less of a first nafion ionomer with a first specific equivalent weight (EW) of 1,000˜1,300; and a coating layer located on the catalyst layer, the coating layer formed from a solution of a second nafion ionomer with a second specific EW less than the first specific EW of the first nafion ionomer, wherein a total quantity of the first and second nafion ionomer is 20˜50% weight of the Pt/C catalyst, and the first nafion ionomer is about 8˜33% of the total quantity of the first and second nafion ionomer.