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A High Conductive Composite Bipolar Plate with Conductive Network Constructed by Chemical Vapor Deposition

Author

Listed:
  • Wenkai Li

    (Carbon-Carbon Composite Materials Research Institute, Powder Metallurgy Research Institute, Central South University, Changsha 410017, China)

  • Haodong Zeng

    (Carbon-Carbon Composite Materials Research Institute, Powder Metallurgy Research Institute, Central South University, Changsha 410017, China)

  • Tao Peng

    (Carbon-Carbon Composite Materials Research Institute, Powder Metallurgy Research Institute, Central South University, Changsha 410017, China)

  • Ziteng Gao

    (Guangdong Hydrogen Development New Material Technology Co., Ltd., A1 (Block 2), No. 28, Xingsheng East Road, Hecheng Street, Gaoming District, Foshan 528500, China)

  • Zhiyong Xie

    (Carbon-Carbon Composite Materials Research Institute, Powder Metallurgy Research Institute, Central South University, Changsha 410017, China
    Guangdong Hydrogen Development New Material Technology Co., Ltd., A1 (Block 2), No. 28, Xingsheng East Road, Hecheng Street, Gaoming District, Foshan 528500, China)

Abstract

In this study, a highly conductive composite bipolar plate with an embedded conductive carbon nanofiber network was prepared by chemical vapor deposition, and a conductive network was constructed inside the composite bipolar plate. The latter network was then compared with a conductive network formed by directly adding carbon nanotubes more evenly distributed. The optimum preparation methods of vapor-grown carbon fibers and the fiber content were analyzed, and the specific surface area and porosity of the bipolar plates were measured and analyzed using a BET test. The results show that the carbon nanofibers prepared under the conditions of 700 °C and a content of 2% exhibited the best effect on improving the performance of the bipolar plates. The conductivity of the prepared bipolar plates could reach 255.2 S/cm, which is 22.1% higher than treatment with multi-walled carbon nanotubes. The bending strength of the prepared bipolar plates was 47.92 MPa, and the interface contact resistance was 6.24 mΩ·cm 2 . In conclusion, the bipolar plates modified with vapor-grown carbon fibers were a promising kind of material for proton exchange membrane fuel cells.

Suggested Citation

  • Wenkai Li & Haodong Zeng & Tao Peng & Ziteng Gao & Zhiyong Xie, 2022. "A High Conductive Composite Bipolar Plate with Conductive Network Constructed by Chemical Vapor Deposition," Energies, MDPI, vol. 15(14), pages 1-16, July.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:14:p:4979-:d:857861
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    Cited by:

    1. Mao, Xiaoyu & Li, Yifan & Hu, Xiufeng & Tian, Runping & Yu, Wei, 2023. "Expanded graphite (EG)/Ni@Melamine foam (MF)/EG sandwich-structured flexible bipolar plate with excellent electrical conductivity, mechanical properties, and gas permeability," Applied Energy, Elsevier, vol. 338(C).

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