Patent Number: 8,298,697

Title: MEA member and polymer electrolyte fuel cell

Abstract: In an MEA member constituted by a polymer electrolyte membrane-electrode assembly (MEA) and a frame and in a polymer electrolyte fuel cell including this MEA member, the MEA and the frame can be easily separated from each other without using any special tool. An MEA member 7 includes an MEA 5 and a plate-shaped resin frame 6, and a separating portion for separating the MEA 5 from the frame 6 is formed in the MEA member 7. The MEA 5 includes a polymer electrolyte membrane 2 and a pair of electrodes 3 and 4 respectively disposed on both main surfaces of the polymer electrolyte membrane 2. The frame 6 sandwiches and holds a peripheral portion of main surfaces of the MEA 5 such that the MEA 5 is located inside the frame. The separating portion is a broken-line cutoff line 50 formed on the frame 6 to divide the frame 6 into two or more parts or a partial sandwiching portion 55 located at an inner peripheral portion of the frame 6 to partially sandwich the peripheral portion of the MEA 5.

Inventors: Unoki; Shigeyuki (Osaka, JP), Nakagawa; Takashi (Osaka, JP), Morimoto; Takashi (Osaka, JP), Yoshimura; Mitsuo (Kyoto, JP)

Assignee: Panasonic Corporation

International Classification: H01M 8/04 (20060101); H01M 8/10 (20060101); H01M 2/10 (20060101); H01M 2/08 (20060101)

Expiration Date: 2020-10-30 0:00:00