US 12,456,742 B2
Method for operating fuel cell
Tomohiro Sakaue, Otsu (JP); Daisuke Izuhara, Otsu (JP); and Masaru Hashimoto, Otsu (JP)
Assigned to TORAY INDUSTRIES, INC., Tokyo (JP)
Appl. No. 18/008,564
Filed by TORAY INDUSTRIES, INC., Tokyo (JP)
PCT Filed Jun. 1, 2021, PCT No. PCT/JP2021/020789
§ 371(c)(1), (2) Date Dec. 6, 2022,
PCT Pub. No. WO2021/251207, PCT Pub. Date Dec. 16, 2021.
Claims priority of application No. 2020-099761 (JP), filed on Jun. 9, 2020.
Prior Publication US 2023/0231165 A1, Jul. 20, 2023
Int. Cl. H01M 8/04701 (2016.01); H01M 4/90 (2006.01); H01M 8/04746 (2016.01); H01M 8/04828 (2016.01); H01M 8/1004 (2016.01); H01M 8/1023 (2016.01); H01M 8/10 (2016.01)
CPC H01M 8/04701 (2013.01) [H01M 4/9075 (2013.01); H01M 8/04753 (2013.01); H01M 8/04835 (2013.01); H01M 8/1004 (2013.01); H01M 8/1023 (2013.01); H01M 2008/1095 (2013.01); H01M 2300/0082 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of operating a fuel cell comprising a membrane electrode assembly containing an electrolyte membrane, catalyst layers, and gas diffusion layers, the method including, in a single step, (a) setting an operating temperature of the fuel cell at 100° C. or more, and (b) concurrently setting a relative humidity of a supply gas to be supplied to the fuel cell to 70% or more and a back pressure of the supply gas to 330 kPa or more.