扭矩对高温燃料电池性能的影响及优化

INFLUENCE OF TORQUE ON PERFORMANCE OF HIGH TEMPERATURE FUEL CELL AND ITS OPTIMIZATION

首先介绍全新设计有效面积为1cm^2的高温质子交换膜燃料电池(high temperature polymer electrolyte membrane fuel cell,HTPEM),并得到最佳气流量和温度实验条件。然后,对不同厚度密封垫圈下电池装配扭矩进行系统研究,结合MEA各组件原始厚度横切示意图;不仅对电池性能提高提供参考依据,还得到最佳密封垫圈厚度和扭矩配合范围。最后通过设计压力装置,测试组成膜电极(membrane electrode assembrane,MEA)各部件或材料的厚度和体积随压力的变化情况,验证建立力学模型的可行性,并从电池内部解释扭矩影响HTPEM性能的原因。

Firstly,new designed high temperature polymer electrolyte membrane fuel cell (HTPEM)with 1cm^2 active area is introduced,and the experimental condition such as the optimum gas flow rate and the appropriate temperature are obtained.Then combining the cross-cutting schematic diagram of the original thickness for each component of the MEA, the cell assembly torque with different thickness sealing gaskets is systematically studied,which not only provides a reference for improving cell performance,but also obtains the optimal gasket thickness and torque fit range.Finally,by designing a pressure device,the thickness and volume of various components or materials of the membrane electrode assembrane (MEA)are tested as pressure changes,and the feasibility of establishing the mechanical model is verified. The reason why the torque affects the HTPEM performance is explained from the inside of the cell.