Back to results
US 2014/0193737 A1Published application
Membrane-electrode assembly, fuel cell stack, fuel cell system and operation method thereof
AssigneePanasonic Corporation
InventorsHiroshi Ishikawa, Yoichiro Tsuji
Life of this patent
Estimating the term…
Abstract
A membrane-electrode assembly includes: a polymer electrolyte membrane; catalyst layers disposed on the polymer electrolyte membrane; and gas diffusion layers respectively disposed on the catalyst layers. Each of the gas diffusion layers is constituted by a porous member containing electrically-conductive particles and polymer resin as major components, and a ratio (y/x) of a tensile strength y (N/cm) of the gas diffusion layer to a dry-wet size change rate x (%) of the polymer electrolyte membrane is 0.10 or higher.
Claims9
A membrane-electrode assembly comprising:
- a polymer electrolyte membrane;
- catalyst layers disposed on the polymer electrolyte membrane;
- and
- gas diffusion layers respectively disposed on the catalyst layers, wherein:
- each of the gas diffusion layers is constituted by a porous member containing electrically-conductive particles and polymer resin as major components;
- and
- a ratio y/x of a tensile strength y (N/cm) of the gas diffusion layer to a dry-wet size change rate x (%) of the polymer electrolyte membrane is 0.10 or higher.
4 more elements
Dependencies are inferred from the claim text.