Materials Reports 2020, Vol. 34 Issue (Z1): 395-399 |
METALS AND METAL MATRIX COMPOSITES |
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Research Progress of Carbon-based Protective Coatings on Metallic Bipolar Platesin Proton Exchange Membrane Fuel Cells |
ZHAO Qiuping1, QIAN Qingyi1,2, ZHANG Bin2, MOU Zhixing1, ZHANG Xingkai2
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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 |
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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.
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Published: 01 July 2020
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Fund:This work was financially supported by the National Natural Science Foundation of China (51901233), Youth Innovation Promotion Association CAS (2019412), Natural Science Foundation of Gansu Province (18JR3RA380), Science and Technology Planning Project of Lanzhou City (2019-RC-16), Science and Technology Planning Project of Chengguan District, Lanzhou City (2019-4-1). |
About author:: Qiuping Zhao received her B.S. degree in Gansu University of Technology in 2001 and received her Ph.D. degree in materials physics and chemistry from Lanzhou University of Technology in 2016. Since 2004, she has been engaged in the preparation and characterization of new energy materials and nanomaterials in Lanzhou University of Technology. She has hosted two provincial level projects and one horizontal project, and participated in one National Natural Science Foundation Project. She has published more than 12 papers in Journal of the Electrochemical So-ciety, Journal of Solid State Electrochemistry, Ionics, Energy Technology, etc. She has won two third class prizes of the Gansu Province Scientific and Technological Progress Award and one first class prize of Scientific and Technolo-gical Progress Award of Metallurgical and Nonferrous Industry Association of Gansu Province ; Xingkai Zhang received his B.S. degree from Nankai University in 2004 and received his Ph.D. degree in materials physics and chemistry from Central Iron and Steel Research Institute in 2014. After two-year postdoctoral research at Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, he is currently an associate researcher in this institute. His research focuses on pre-paration and characterization of anti-corrosion and an-tiabrasion metal-based coatings. He hosts or has hosted eight projects including one National Natural Science Foundation, one Natural Science Foundation of Gansu Province, one Science and Technology Planning Project of Lanzhou City and so on. He has 3 national invention patents, and he has published more than 20 papers. He is a member of Youth Innovation Promotion Association, Chinese Academy of Sciences. |
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