Method for operating fuel cells for systems that are restricted by exposure to thermal stress and fuel cell stack for carrying out said method

摘要

According to the invention, a fuel cell is operated at a working temperature of between 60� C. and 110� C. and thermally insulated from the exterior, the waste air from the cathode being cooled by a surplus of incoming air that is provided for the reaction. The supplied fuel is pre-heated during the exchange of heat. The fuel cell that is operated according to said method can be used in systems that are restricted by exposure to thermal stress and can be produced in a cost-effective manner.