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Design and fabrication of bipolar plates for PEM water electrolyser

Journal of Materials Science & Technology 2023年第15期146卷 19-41页

作者： Xiejing Luo Chenhao Ren Jie Song Hong Luo Kui Xiao Dawei Zhang Junjie Hao Zhanfeng Deng Chaofang Dong Xiaogang Li Beijing Advanced Innovation Center for Materials Genome Engineering Key Laboratory for Corrosion and Protection(MOE)Beijing 100083China Institute for Advanced Materials and Technology University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Advanced Power Transmission Technology State Grid Smart Grid Research Institute Co.Ltd.Beijing 102209China

Hydrogen energy,whether in generation plants or utilization facilities,plays a decisive role in the mission to achieve net-zero greenhouse gas emissions,all to minimize pollution.The growing demand for clean energy carrier steadily accelerates the development of hydrogen production processes,and therein proton exchange membrane(PEM)water electrolysis is deemed a promising long-term strategy for hydrogen preparation and collection.This review retrospects recent developments and applications of bipolar plates(BPs)as key components in PEM fuel cells and water electrolysers.The main content includes multifaceted challenges in the R&D or fabrication of BPs and potential future trends have also been proposed.Specific details cover the BPs matrix(metallic materials and carbon composites)and the surface coating types(metal and compound coatings,carbon-based coatings,and polymer coatings),as well as the influence of flow field design for mass transport.Long-term development and feasible researches of BPs are prospected.Especially in the following aspects:(1)Structural and functional integration of components,such as material fabrication and flow field geometry optimization using 3D printing technology;(2)Introduction of environment-friendly renewable energy for hydrogen production;(3)Research on hydrogen energy reversible systems;(4)Composition optimization of surface coatings based on computational materials science and(5)systematic design expected to evolve into the next generation of BPs.

关键词： PEM water electrolyser Bipolar plates Corrosion Coatings interfacial contact resistance

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Electrochemical Properties of Tungsten-Alloying-Modified AISI 430 Stainless Steel as Bipolar Plates for PEMFCs used in Marine Environment

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Acta Metallurgica Sinica(English Letters) 2016年第10期29卷 920-927页

作者： Jin-Long Cui Zhen-Dong Yao Yong-Fu Cui Fu-Peng Cheng Ting Xiao Hong-Liang Sun Ru-Jin Tian Jun-Cai Sun Institute of Materials and Technology Dalian Maritime University College of Materials Science and Engineering Dalian Jiaotong University

To improve the corrosion resistance and surface electrical conductivity of AISI 430 stainless steel （430 SS） as bipolar plates for proton exchange membrane fuel cells （PEMFCs） used in marine environment, a tungsten alloying layer has been successfully prepared on 430 SS substrate via the plasma surface diffusion alloying technique. The tungsten- modified （W-modified） 430 SS displays a 7-8 Ixm tungsten alloying layer with a body-centered-cubic structure. The W-modified surface also shows a better hydrophobicity with contact angle of 93.5~ and a lower interfacial contact resistance compared with the untreated 430 SS. The potentiodynamic and potentiostatic polarization and electrochemical impedance spectroscopy measurements show that the corrosion resistance of 430 SS is obviously improved in simulated PEMFC environment （0.05 M H2SO4 ＋ 2 ppm HF ＋ 0.01 M NaC1 solution at 70℃）, after the plasma surface diffusion alloying process.

关键词： Tungsten alloying layer Corrosion resistance Proton exchange membrane fuel cell interfacial contact resistance Bipolar plates

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Performance of Nb_(0.8)Zr_(0.2) Layer-Modified AISI430 Stainless Steel as Bipolar Plates for Direct Formic Acid Fuel Cells

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Acta Metallurgica Sinica(English Letters) 2021年第1期34卷 77-84页

作者： Yuanyuan Liu Zhongmin Lang Jinlong Cui Shengli An Inner Mongolia Key Laboratory of Coal Chemical Engineering and Comprehensive Utilization School of Chemistry and Chemical EngineeringInner Mongolia University of Science and TechnologyBaotou 014010China School of Materials and Metallurgy Inner Mongolia University of Science and TechnologyBaotou 014010China

To improve the interfacial conductivity and corrosion resistance of AISI430 stainless steel(430 SS)as bipolar plates for direct formic acid fuel cells(DFAFCs),a Nb_(0.8)Zr_(0.2) layer has been successfully synthesized via the pulsed laser deposition(PLD)technique on the surface of 430 SS.This Nb_(0.8)Zr_(0.2) layer is smooth,uniform,and comparatively compact without any surface flaw and micropore.Investigation under the simulated anodic environment of DFAFCs(0.05 M H_(2)SO_(4)+2 ppm HF+10 M HCOOH at 70℃)shows that the corrosion resistance of 430 SS is obviously ameliorated after the PLD modification.In addition,the interfacial contact resistance of Nb_(0.8)Zr_(0.2)-430 SS(6.0 mΩcm^(2))is much smaller than that of bare 430 SS(151.3 mΩcm^(2))at the clamping force of 140 N cm^(-2).Besides,diff erent from the highly increased interfacial contact resistance of bare 430 SS,the Nb_(0.8)Zr_(0.2)-430 SS shows a minor increase resistance after potentiostatic tests in simulated anodic environment of DFAFCs.

关键词： Corrosion resistance Nb_(0.8)Zr_(0.2) layer Direct formic acid fuel cell interfacial contact resistance Bipolar plates

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Influence of Deposition Temperature on the Electrical and Electrochemical Properties of Carbon-Based Coatings for Metallic Bipolar Plates, Prepared by Cathodic Arc Evaporation

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Advances in Materials Physics and Chemistry 2022年第4期12卷 47-57页

作者： Maximilian Steinhorst Maurizio Giorgio Teja Roch Christoph Leyens Fraunhofer Institute for Material and Beam Technology IWS Dresden Germany Institute of Material Science Technische Universit&auml t Dresden Dresden Germany

Cathodic arc evaporation is a well-established physical vapor deposition technique which is characterized by a high degree of ionization and high deposition rate. So far, this technique has been mainly used for the deposition of tribological coatings. In this study, anti-corrosive and electrical conductive carbon-based coatings with a metallic interlayer were prepared on stainless steel substrates as surface modification for metallic bipolar plates. Hereby, the influence of the deposition temperature during the deposition of the carbon top layer was investigated. Raman spectroscopy revealed differences in the microstructure at 200°C compared to 300°C and 100°C. Measurements of the interfacial contact resistance showed that the deposited coatings significantly improve the electrical conductivity. There are only minor differences between the different carbon top layers. The corrosion resistance of the coatings was studied via potentiodynamic polarization at room temperature and 80°C. Experiments showed that the coating with a carbon top layer deposited at 200°C, considerably reduces the current density and thus corrosion of the substrate is suppressed.

关键词： Bipolar Plate Corrosion interfacial contact resistance Carbon Thin Film Physical Vapor Deposition

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