US 11,705,572 B2
Fuel cell and manufacturing method of the same
Makoto Adachi, Nagakute (JP); Katsuhiko Kinoshita, Nisshin (JP); Yu Ashitaka, Toyota (JP); Naohiro Mitani, Okazaki (JP); Yusuke Watanabe, Miyoshi (JP); and Kenji Sato, Kasugai (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Sep. 4, 2020, as Appl. No. 17/12,164.
Claims priority of application No. 2019-213807 (JP), filed on Nov. 27, 2019.
Prior Publication US 2021/0159533 A1, May 27, 2021
Int. Cl. H01M 8/242 (2016.01); H01M 8/1004 (2016.01)
CPC H01M 8/242 (2013.01) [H01M 8/1004 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A fuel cell comprising:
a membrane electrode assembly having electrodes disposed on both surfaces of an electrolyte membrane;
a gas diffusion layer stacked on a first surface of the membrane electrode assembly;
a resin frame assembled onto the first surface of the membrane electrode assembly so as to surround an outer periphery of the gas diffusion layer apart from the outer periphery of the gas diffusion layer; and
a resin sheet disposed between the gas diffusion layer and the resin frame, and the membrane electrode assembly so as to fill a space between an inner periphery of the resin frame and the outer periphery of the gas diffusion layer, and
further comprising an adhesive layer made of an adhesive between the resin frame, the resin sheet, and the gas diffusion layer, and the membrane electrode assembly, wherein:
a region in the membrane electrode assembly that overlaps an outer peripheral part of the gas diffusion layer includes a membrane exposure region in which the electrode is not disposed on the first surface of the membrane electrode assembly; and
the resin sheet includes a part that overlaps the membrane exposure region in the membrane electrode assembly, the adhesive layer, and the gas diffusion layer in a stacking direction of the gas diffusion layer; and the part includes a void that penetrates the resin sheet in the stacking direction and allows disposition of the adhesive in the void.