Patent ID: 9219282
Filing Date: 2015-12-22
Classification: H01M,Y02E

Abstract:
1. A membrane electrode assembly comprising: an electrolyte membrane; and a frame-shaped first gasket disposed on a first surface of the electrolyte membrane and a second gasket disposed on a second surface of the electrolyte membrane; the first and second gaskets have an overlapping portion positioned at a peripheral edge of the electrolyte membrane, a bonding portion which is positioned outside of the peripheral edge and bonded together, and a connection portion between the overlapping portion and the bonding portion which define a void formed between the first and second gaskets in the connection portion between the peripheral portion and the bonding portion; the overlapping portion, bonding portion, and connection portion have through holes which extend in a thickness direction perpendicular to the surfaces of the electrolyte membrane whereby the void is in communication with the through holes of the connection portion; and an aperture ratio of the through holes of the overlapping portions is greater than an aperture ratio of the through holes of the bonding portions.