US 11,843,136 B2
Fuel cell separator and method of manufacturing fuel cell separator
Akihiro Noda, Saitama (JP); and Katsunori Saiki, Saitama (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Oct. 25, 2021, as Appl. No. 17/452,231.
Claims priority of application No. 2020-183268 (JP), filed on Oct. 30, 2020.
Prior Publication US 2022/0140358 A1, May 5, 2022
Int. Cl. H01M 8/0228 (2016.01); H01M 8/0221 (2016.01); H01M 8/0213 (2016.01); H01M 8/021 (2016.01)
CPC H01M 8/0228 (2013.01) [H01M 8/021 (2013.01); H01M 8/0213 (2013.01); H01M 8/0221 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A fuel cell separator included in a fuel cell, the fuel cell separator comprising:
a substrate made of stainless steel, which the substrate is rectangular, and includes first and second short sides, and a pair of long sides;
a middle portion including a power generating portion; and
an outer peripheral portion including a non-power generating portion, which the outer peripheral portion includes a plurality of through holes;
wherein the middle portion includes a dissimilar metal layer different from the stainless steel included in the substrate on the substrate, and a carbon layer provided on the dissimilar metal layer, and
wherein the outer peripheral portion includes a first portion including the dissimilar metal layer, the carbon layer, and a resin layer on the carbon layer, and second and third portions not including the dissimilar metal layer or the carbon layer, and including the resin layer on the substrate, and the second and third portions are disposed on the first short side of the substrate; and
the resin layer formed on the second and third portions directly contacts the substrate, and is free of any layers formed thereon.