Invention Grant
- Patent Title: Fuel cell stack with improved end cell performance provided by higher modulus of elasticity
-
Application No.: US14062628Application Date: 2013-10-24
-
Publication No.: US09853307B2Publication Date: 2017-12-26
- Inventor: Yeh-Hung Lai , Pinkhas A. Rapaport , Po-Ya Abel Chuang , Wenbin Gu
- Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Agency: Miller IP Group, PLC
- Agent John A. Miller
- Main IPC: H01M8/04082
- IPC: H01M8/04082 ; H01M8/023

Abstract:
A fuel cell stack that includes a gas diffusion media for the end cells in the stack that has less of an intrusion into the flow field channels of the end cells that the other cells, so as to increase the flow rate through the flow channels in the end cells relative to the flow rate through the flow channels in the other cells. A different diffusion media can be used in the end cells than the nominal cells, where the end cell diffusion media has less of a channel intrusion as a result of diffusion media characteristics. Also, the same diffusion media could be used in the end cells as the nominal cells, but the end cell diffusion media layers could be thinner than the nominal cell diffusion media layers. Further, a higher amount of pre-compression can be used for the diffusion media in the end cells.
Public/Granted literature
- US20140051004A1 FUEL CELL STACK WITH IMPROVED END CELL PERFORMANCE PROVIDED BY HIGHER MODULUS OF ELASTICITY Public/Granted day:2014-02-20
Information query