Patent ID: 9076998
Filing Date: 2015-07-07
Classification: H01M,Y02E

Abstract:
1. A fuel-cell membrane-subgasket assembly comprising: an electrolyte membrane; and a coated subgasket overlying a perimeter of the electrolyte membrane, the coated subgasket defining an active area of the electrolyte membrane inside the perimeter of the electrolyte membrane, wherein: the coated subgasket comprises a subgasket body formed from polyethylene terephthalate; the subgasket body has a first subgasket side facing the electrolyte membrane and a second subgasket side opposite the first subgasket side; at least one of the first subgasket side of the subgasket body and the second subgasket side of the subgasket body comprises a subgasket coating layer over the subgasket material; the subgasket coating layer comprises a subgasket coating material that increases bending stiffness of the subgasket body, degradation resistance of the subgasket body in the presence of moisture, and puncture resistance of the subgasket body; and the subgasket coating material is titanium nitride.