公开(公告)号：US20230231165A1

公开(公告)日：2023-07-20

申请号：US18008564

申请日：2021-06-01

Applicant: TORAY INDUSTRIES, INC.

Inventor： Tomohiro SAKAUE ,  Daisuke IZUHARA ,  Masaru HASHIMOTO

IPC: H01M8/04701 ,  H01M4/90 ,  H01M8/04746 ,  H01M8/04828 ,  H01M8/1023 ,  H01M8/1004

CPC classification number: H01M8/04701 ,  H01M4/9075 ,  H01M8/04753 ,  H01M8/04835 ,  H01M8/1023 ,  H01M8/1004 ,  H01M2300/0082 ,  H01M2008/1095

Abstract: The present invention provides a method of operating a fuel cell, which method enables a polymer electrolyte membrane to be humidified sufficiently under high-temperature conditions, and can obtain excellent power generation performance. The present invention is a method of operating a fuel cell including a membrane electrode assembly containing an electrolyte membrane, catalyst layers, and gas diffusion layers, the method including a step of setting the operating temperature of the fuel cell at 100° C. or more, wherein, in the step, the relative humidity of supply gas to be supplied to the fuel cell is 70% or more, and the back pressure of the supply gas is 330 kPa or more.