PEFC Stack for Operating Temperatures up to 130 °C

摘要: At the DLR Institute of Technical Thermodynamics new concepts for fuel cell stacks are being developed various applications and load profiles. Thereby, main focus lies on simplification reaching a cost reduction as well an increase power density. Today’s polymer electrolyte cells (PEFCs) applicable only within limited range operating temperature. This limitation restricts spectrum possible hinders their flexibility during operation. Therefore, continuous operation at elevated temperatures or in extended temperature a limited time offers opportunity to overcome these restrictions. Unfortunately, higher lead challenges, especially when conventional materials membrane electrode assemblies (MEAs) used: In order avoid critical conditions ascertain sufficient durability performance stack, special regarding bipolar plates, cooling strategy, MEAs themselves closer look water management essential. Furthermore, strategy stack has be adapted with respect all components.