1 School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China; 2 State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Abstract: As the fifth-generation fuel cells, proton exchange membrane fuel cells (PEMFCs) have attracted much attention due to their low operating temperature, high starting speed, high power density and other advantages. Bipolar plates play an important role in PEMFCs. Graphite has good chemical stability and electrical conductivity, and can be used to prepare bipolar plates. However, graphite bipolar plates are expensive and brittle, and therefore have been gradually replaced by metallic bipolar plates in recent years. Compared with graphite bipolar plates, metallic bipolar plates have good mechanical properties, good processability, low permeability, etc. However, metallic bipolar plates are easily corroded in the acidic working environment, and the generated corrosion products can poison the catalyst and degrade the performance of fuel cells. The corrosion resistance and electrical conductivity of metallic bipolar plates can be significantly improved by preparing protective coatings on their surface, thus prolonging the service life of PEMFCs. Among various protective coatings, because carbon-based protective coatings possess the ideal corrosion resistance, adjustable electrical conductivity and low cost, they are expected to be applied as protective coatings on metallic bipolar plates. In this article, the recent researches related to carbon-based protective coatings on metallic bipolar plates, such as graphite, conducting polymer, graphene and amorphous carbon coatings, are reviewed.
作者简介: 赵秋萍,兰州理工大学副教授,硕士研究生导师。2001年本科毕业于甘肃工业大学,2016年在兰州理工大学获材料物理与化学专业博士学位。2004年至今在兰州理工大学从事新能源材料的制备与表征、纳米材料的制备与表征等研究工作。主持完成省级课题2项、横向课题1项,参与国家自然科学基金1项。在 Journal of the Electrochemical Society、 Journal of Solid State Electrochemistry、 Ionics、 Energy Technology等国内外期刊发表论文12篇。获甘肃省科技进步奖三等奖2项,甘肃省冶金有色工业协会工业科技进步奖一等奖1项;张兴凯,中国科学院兰州化学物理研究所副研究员,中国科学院青年创新促进会会员。2008年本科毕业于南开大学物理学院,2014年在钢铁研究总院获得材料物理与化学专业博士学位,2016年于中国科学院兰州化学物理研究所博士后出站,并留所工作至今。主要从事防腐耐磨金属基镀层制备与性能研究方面的工作。先后主持国家自然科学基金、甘肃省自然科学基金、兰州市人才创新创业项目、甘肃省博士后择优资助项目等8项。在国内外学术刊物上发表论文20多篇,获授权发明专利3项。曾获2017年第二届中国创新挑战赛(浙江)金点子奖。
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