US 12,126,030 B2
Fuel-cell cell
Shuzo Tsuchida, Nara (JP); Ryouhei Seki, Tokyo (JP); and Tsutomu Kawashima, Nara (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/414,100
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Nov. 29, 2019, PCT No. PCT/JP2019/046818
§ 371(c)(1), (2) Date Jun. 15, 2021,
PCT Pub. No. WO2020/129575, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 2018-235798 (JP), filed on Dec. 17, 2018.
Prior Publication US 2022/0052351 A1, Feb. 17, 2022
Int. Cl. H01M 4/92 (2006.01); H01M 8/1004 (2016.01); H01M 8/10 (2016.01)
CPC H01M 4/926 (2013.01) [H01M 8/1004 (2013.01); H01M 2008/1095 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A fuel-cell cell comprising:
an electrolyte membrane;
a cathode catalyst layer laminated on a first main surface side of the electrolyte membrane;
a cathode gas diffusion layer laminated on the cathode catalyst layer;
an anode catalyst layer laminated on a second surface side of the electrolyte membrane; and
an anode gas diffusion layer laminated on the anode catalyst layer, wherein
the cathode catalyst layer includes a cathode catalyst in which catalyst particles with a catalytic function are carried on a carrier, and
the cathode catalyst includes a water-repellent polymer material in at least part of a surface thereof,
wherein
the cathode catalyst layer comprises:
a first catalyst layer, and
a second catalyst layer positioned closer to the electrolyte membrane than the first catalyst layer, and
the catalyst particles of the cathode catalyst included in the first catalyst layer have a particle diameter larger than that of the catalyst particles of the cathode catalyst included in the second catalyst layer.