PEMFC膜电极的活化研究进展

Progress of Membrane Electrode Assembly Activation for Proton Exchange Membrane Fuel Cell

质子交换膜燃料电池(Proton Exchange Membrane Fuel Cell, PEMFC)的性能很大程度上由膜电极决定.新组装的PEMFC需要对其膜电极组件(Membrane Electrode Assembly, MEA)进行适当的活化,才能达到稳定的性能.通过活化MEA可使质子交换膜充分润湿,并建立有效的质子、电子、气体及水的传输通道,从而提高PEMFC的放电性能和稳定性.本文综合分析了PMEFC的活化机理,并将活化类型分为三种:预活化型、放电活化型和恢复活化型.分别对三种活化类型的特点进行了阐述,并对PEMFC的活化工艺研究进行了展望.

The performance of proton exchange membrane fuel cell(PEMFC) is largely determined by the membrane electrode assembly(MEA). The MEA of newly assembled PEMFC needs to be properly activated to achieve stable performance. By activating MEA, proton exchange membrane can be fully wetted and efficient transport channels of proton, electron, gas and water can be established, thus improving discharge performance and stability of PEMFC. This paper analyzed the activation mechanism of PEMFC, and the activation processes were divided into three types: pre-activation, discharge activation and recovery activation. The characteristics of three activation types were described respectively, and the research on activation process of PEMFC was prospected.