发明授权
- 专利标题: System and method for operating a high temperature fuel cell as a back-up power supply with reduced performance decay
- 专利标题(中): 操作高温燃料电池作为后备电源的性能衰减降低的系统和方法
-
申请号: US13367949申请日: 2012-02-07
-
公开(公告)号: US08202655B1公开(公告)日: 2012-06-19
- 发明人: Yang Song , Zakiul Kabir , Craig Evans , Lin Qiu , Donald L. Maricle
- 申请人: Yang Song , Zakiul Kabir , Craig Evans , Lin Qiu , Donald L. Maricle
- 申请人地址: US OR Hillsboro
- 专利权人: ClearEdge Power, Inc.
- 当前专利权人: ClearEdge Power, Inc.
- 当前专利权人地址: US OR Hillsboro
- 代理机构: Alleman Hall McCoy Russell & Tuttle LLP
- 主分类号: H01M8/00
- IPC分类号: H01M8/00
摘要:
A method is provided for reducing degradation in a fuel cell assembly, including at least one fuel cell with a PBI membrane, during standby, operation. The method may include electrochemically consuming an oxidant from a cathode coupled to the PBI membrane in response to a disconnection of an external load and supplying fuel to remove or electrochemically consume any back-diffused oxidant to the associated fuel cell sufficient to replace or consume the back-diffused oxidant while the external load is removed, and/or also may include controlling a standby temperature of the fuel cell. In this way, it may be possible to avoid increased cell voltage decay associated with degradation of the PBI in a simple and cost effective system.