Abstract:

An ideal metal bipolar plate for proton exchange membrane fuel cell (PEMFC) needs good corrosion resistance and electrical conductivity. Surface modification is one of the main ways to solve the problem of corrosion resistance and electrical conductivity of metal bipolar plate for PEMFC. This paper classified, introduced and summarized various performance evaluation methods of surface modification coating on metal bipolar plate. The performance evaluation methods mainly included the electrochemical corrosion analysis, interfacial contact resistance measurements, characterization of surface topography, composition analysis and in-situ assembly of cells evaluation. It was found that the test standards were not unified and in situ evaluation methods were less used. Therefore, The research directions were put forward that the effects of test parameters need to be further analyzed to unify the test standards, and the evaluations in the real cells running environment were adopted as far as possible. It is expected that the following researches can improve the evaluation standard systems and promote the industry development orderly as soon as possible.

Key words: metal bipolar plate, surface modification coating, performance evaluation methods

摘要：

理想的质子交换膜燃料电池（PEMFC）用金属双极板需要具备良好的耐蚀性和导电性，表面改性是解决金属双极板耐蚀性和导电性的主要途径之一。本文对金属双极板表面改性涂层的各种性能评价方法进行了归类、介绍、总结。表面改性金属双极板的性能评价方法主要有非原位的电化学腐蚀分析、界面接触电阻测量、表面形貌表征、组分分析以及原位的组装电池评价等，重点介绍了各种方法的基本原理、操作条件、结果分析以及应用情况等，发现电化学腐蚀分析的测试标准不统一、原位评估方法应用较少等问题，提出进一步分析测试参数影响并统一测试标准以及尽可能在电池运行环境中评估金属双极板性能的研究方向，期待后续研究能够尽快完善相关评价标准体系，促进行业规范有序发展。

关键词: 金属双极板, 表面改性涂层, 评价方法