US 11,682,770 B2
Catalyst layer for fuel cell, membrane electrode assembly, and fuel cell
Hitoshi Ishimoto, Hyogo (JP); Kazuya Yamasaki, Osaka (JP); Shinichiro Imura, Hyogo (JP); Takeshi Minamiura, Osaka (JP); Yukihiro Shimasaki, Hyogo (JP); and Kenichi Ezaki, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 16/957,192
Filed by PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
PCT Filed Dec. 26, 2018, PCT No. PCT/JP2018/047733
§ 371(c)(1), (2) Date Jun. 23, 2020,
PCT Pub. No. WO2019/131709, PCT Pub. Date Jul. 4, 2019.
Claims priority of application No. JP2017-254979 (JP), filed on Dec. 28, 2017; application No. JP2018-053387 (JP), filed on Mar. 20, 2018; and application No. JP2018-056989 (JP), filed on Mar. 23, 2018.
Prior Publication US 2020/0335797 A1, Oct. 22, 2020
Int. Cl. H01M 4/86 (2006.01); H01M 4/88 (2006.01); H01M 4/92 (2006.01); H01M 8/1004 (2016.01); H01M 8/10 (2016.01)
CPC H01M 4/8673 (2013.01) [H01M 4/8657 (2013.01); H01M 4/8807 (2013.01); H01M 4/92 (2013.01); H01M 4/921 (2013.01); H01M 8/1004 (2013.01); H01M 2008/1095 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A catalyst layer for a fuel cell comprising:
fibrous conductive members;
particulate conductive members; and
catalyst particles,
wherein a length L of the fibrous conductive members and a thickness T of the catalyst layer for a fuel cell satisfy the following relational expression:
L/T≤3,
an amount of the particulate conductive members is equal to or less than 40 parts by mass relative to 100 parts by mass of a total of the fibrous conductive members and the particulate conductive members, and
the fibrous conductive members are inclined relative to a surface direction of the catalyst layer for a fuel cell.