金属双极板导电耐蚀涂层的研究进展  

Research Progress of Conductive and Corrosion-Resisntant Coatings for Metal Bipolar Plates

作　　者：吕建祥 张斌[1] 朱永明 陈丽[2] LU Jianxiang;ZHANG Bin;ZHU Yongming;CHEN Li(Key Laboratory of Science and Technology on Wear and Protection of Materials,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China;School of Petrochemical Technology,Lanzhou University of Technology,Lanzhou 730050,China;College of Materials Science and Opto-Electronic Technology,University of Chinese Academy of Sciences,Beijing 101408,China)

机构地区：[1]中国科学院兰州化学物理研究所,材料磨损与防护重点实验室,兰州730000 [2]兰州理工大学石油化工学院,兰州730050 [3]中国科学院大学材料科学与光电技术学院,北京101408

出　　处：《真空与低温》2023年第4期327-338,共12页Vacuum and Cryogenics

基　　金：吉林省与中国科学院科技合作高技术产业化专项(2021SYHZ0008)。

摘　　要：双极板(BPs)作为燃料电池的核心部件之一,应具有优良的导电性、耐蚀性、低成本、良好的机械性能和气密性。与石墨BPs相比,金属BPs的力学性能较好,易于加工,成本较低,但是在燃料电池的酸性工作环境中易被腐蚀,会导致燃料电池输出效率降低,严重影响燃料电池的应用。因此,表面防腐蚀技术是使金属BPs突破应用场景限制的关键瓶颈技术,开发具有优良导电性、强耐腐蚀性的新型BPs涂层始终是该领域的一项重要任务。对过渡金属碳化物涂层、过渡金属氮化物涂层、非晶碳涂层、石墨烯基涂层、导电聚合物涂层和高熵合金涂层等在燃料电池金属BPs方面的研究进展进行了系统的梳理、总结和分析,提出了金属BPs在实际应用中仍须解决的关键问题,并对金属BPs防腐蚀涂层的发展趋势进行了展望。As one of the core components of fuel cell,bipolar plate has the important functions,namely,collecting the current generated by fuel cell,supplying reactive gas to the electrodes and preventing the penetration of reactive substances between the electrodes.Bipolar plate should possess excellent conductivity,high corrosion resistance,low cost,good mechanical properties and gas tightness.Compared with graphite bipolar plate,metal bipolar plate has better mechanical properties,easy processing and lower cost.However,metal bipolar plates are prone to corrosion in the acidic working environment of fuel cells,resulting in low output efficiency,which seriously affects the application of fuel cells.Therefore,surface anticorrosion treatment is the key technology for fuel cells to achieve breakthrough in the application.It is always an important task to develop new coatings for bipolar plates with excellent electrical conductivity and corrosion resistance in this field.In this paper,the preparation,corrosion resistance and conductivity of several anti-corrosive coatings,including carbide coatings,nitride coatings,carbon-based coatings,graphene-based coatings,conducting polymer coatings and high entropy alloy coating,in recent years are systematically introduced.The key problems that still need to be solved in the practical application of metal bipolar plates are put forward,and the development trend of anti-corrosion coating for metal bipolar plates is also prospected.

关 键 词：燃料电池 双极板 耐蚀性 导电性 表面改性 

分 类 号：TG174[金属学及工艺—金属表面处理] TM911.4[金属学及工艺—金属学]