公开(公告)号：US10553889B2

公开(公告)日：2020-02-04

申请号：US15806674

申请日：2017-11-08

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tohru Morita

IPC: H01M8/1067 ,  H01M4/92 ,  H01M4/86 ,  H01M8/1044 ,  H01M8/1039 ,  H01M8/1018

Abstract: A catalyst layer for a fuel cell includes a catalyst-supporting carbon in which a catalyst is supported on carbon support powder of which particles have pores, a first electrolyte resin having an oxygen permeability of less than 2.2×10−14 mol/(m·s·Pa) under an environment at a temperature of 80° C. and a relative humidity of 30%, and a second electrolyte resin having an oxygen permeability of 2.2×10−14 mol/(m·s·Pa) or more under an environment at a temperature of 80° C. and a relative humidity of 30%. The content of the first electrolyte resin is an amount equal to or larger than a value X [g] obtained in the equation X=S×R/4436 with respect to 1 g of the carbon support. S denotes a surface area [m2] of the carbon support. R denotes a proportion of the area of the outermost surface of the carbon support with respect to the surface area of the carbon support.