Energy Storage Science and Technology ›› 2021, Vol. 10 ›› Issue (6): 1943-1951.doi: 10.19799/j.cnki.2095-4239.2021.0201

• Special issue of hydrogen energy and fuel cell • Previous Articles     Next Articles

Review of development of bipolar plate materials for solid oxide fuel cell

Shouli WEI1,2,3(), Xichao LI4, Xiuliang CHANG1,2,3, Bing CHEN1,2,3, Zhuo XU1,2,3, Tao ZHANG1,2,3, Lili ZHENG1,2,3(), Zuoqiang DAI1,2,3   

  1. 1.College of Mechanical and Electrical Engineering, Qingdao University
    2.Power Integration and Energy Storage System Engineering Technology Center of Qingdao University, Qingdao University
    3.National and Local Joint Engineering Technology Center for Intelligent Power Integration Technology of Electric Vehicles (Qingdao), Qingdao 266071, Shandong, China
    4.Energy Saving Business Division, CRRC Qingdao Sifang Rolling Stock Research Institute Co. Ltd. , Qingdao 266031, Shandong, China
  • Received:2021-05-08 Revised:2021-06-09 Online:2021-11-05 Published:2021-11-03
  • Contact: Lili ZHENG E-mail:wslqdu@163.com;llzhengqdu@163.com

Abstract:

As the third generation fuel cell, solid oxide fuel cell (SOFC) has attracted much attention due to its high energy conversion efficiency, a wide range of fuel applications, environmental friendliness, all-solid-state, and many other advantages. As an essential component of a solid oxide fuel cell, the bipolar plate (also known as a connector) serves as a series-parallel single cell, isolating fuel gas and air in the SOFC stack, and has a significant impact on cell performance and commercial cost. Different bipolar plate materials have different performance issues, with the main focus being on electrical conductivity, oxidation resistance, chemical stability, and thermal expansion coefficient matching. In this paper, the development history and current research progress of traditional ceramic materials, alloy materials, new ceramic materials, and composite bipolar plates are reviewed by reading recent relevant literature, and component optimization design and surface modification (coating active oxide coating, composite bipolar plates) are primarily introduced. Rare earth perovskite coating and spinel coating can improve the ability to inhibit the outward diffusion of cadmium, oxidation resistance, and conductivity of the alloy. The comprehensive analysis demonstrates that high-performance and low-cost bipolar plate materials can be obtained through component optimization design and surface modification to compensate for the performance defects of alloy as bipolar plate materials and that new ceramic materials or composites can be prepared to realize the large-scale commercial application of SOFC.

Key words: solid oxide fuel cell, bipolar plate, alloy, coating

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