US 11,942,665 B2
Separator member for fuel cell, and method for manufacturing said separator member
Akira Yoshida, Niigata (JP); Kio Miyaji, Niigata (JP); and Kenichi Watabe, Niigata (JP)
Assigned to ARISAWA MFG. CO., LTD., Niigata (JP)
Appl. No. 17/923,814
Filed by Arisawa MFG. Co., Ltd., Niigata (JP)
PCT Filed May 20, 2021, PCT No. PCT/JP2021/019240
§ 371(c)(1), (2) Date Nov. 7, 2022,
PCT Pub. No. WO2021/246189, PCT Pub. Date Dec. 19, 2021.
Claims priority of application No. 2020-098939 (JP), filed on Jun. 5, 2020.
Prior Publication US 2023/0178758 A1, Jun. 8, 2023
Int. Cl. H01M 8/0228 (2016.01); H01M 8/0213 (2016.01); H01M 8/0221 (2016.01)
CPC H01M 8/0228 (2013.01) [H01M 8/0213 (2013.01); H01M 8/0221 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A separator member for a fuel cell, comprising:
a first resin layer including a resin; and
a graphite layer that is layered on the first resin layer and substantially made of graphite, wherein
a layering amount of the graphite layer is of 0.5 to 30 g/m2,
a volume resistivity of the graphite is 3 mΩ·cm or less,
a material included in the graphite layer includes 95% by weight or more of graphite,
a conductive fiber base material and a second resin layer including a resin are layered between the first resin layer and the graphite layer in order in which the conductive fiber base material is closer to the first resin layer than the second resin layer, and
a thickness of the second resin layer is smaller than a thickness of the first resin layer.