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US 2010/0062320 A1Published application
Subgasket window edge design relief
AssigneeGM Global Technology Operations LLC
InventorsChad A. Dammar, Saurabh Vyas, Ronald L. James, Matthew J. Beutel
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Abstract
A unitized electrode assembly for a fuel cell comprising an electrolyte membrane and a subgasket. The subgasket maximizing an operating life of the electrolyte membrane, militating against adverse effects of membrane expansion during use of the fuel cell and membrane shearing under unitized electrode assembly compression.
Claims20
A unitized electrode assembly for a fuel cell, comprising:
- an electrolyte membrane;
- and
- a subgasket disposed adjacent the electrolyte membrane, at least a portion of a peripheral edge of the subgasket having a first thickness and a remainder of the subgasket having a second thickness, the second thickness greater than the first thickness.
A unitized electrode assembly for a fuel cell, comprising:
- an electrolyte membrane;
- a subgasket disposed adjacent the electrolyte membrane, at least a portion of a peripheral edge of the subgasket having a first thickness and a remainder of the subgasket having a second thickness, the second thickness greater than the first thickness;
- and
- a diffusion media, a first portion of the diffusion media disposed adjacent the electrolyte membrane and a second portion of the diffusion media disposed adjacent the portion of the peripheral edge of the subgasket.
1 more element
A unitized electrode assembly for a fuel cell, comprising:
- an electrolyte membrane;
- a subgasket disposed adjacent the electrolyte membrane, at least a portion of a peripheral edge of the subgasket is one of a beveled portion and a stepped portion having a first thickness and a remainder of the subgasket having a second thickness, the second thickness greater than the first thickness;
- and
- a diffusion media, a first portion of the diffusion media disposed adjacent the electrolyte membrane and a second portion of the diffusion media disposed adjacent the portion of the peripheral edge of the subgasket.
1 more element
Dependencies are inferred from the claim text.