System and method for operating a high temperature fuel cell as a back-up power supply with reduced performance decay

摘要: A method is provided for reducing degradation in a fuel cell assembly, including at least one with PBI membrane, during standby, operation. The may include electrochemically consuming an oxidant from cathode coupled to the membrane response disconnection of external load and supplying remove or consume any back-diffused associated sufficient replace while removed, and/or also controlling standby temperature cell. In this way, it be possible avoid increased voltage decay simple cost effective system.