Bipolar plate is an important core component of proton exchange membrane fuel cell,which has the functions of separating reaction gas,collecting current,dissipating heat,draining water,supporting membrane electrode and transporting gas.The research and application status of graphite bipolar plate,composite bipolar plate and metal bipolar plate is summarized in this paper,and the advantages and disadvantages of the three kinds of bipolar plates are introduced.Metal bipolar plate is suitable for large-scale production because of its high strength,good ductility,good electrical and thermal conductivity,good machinability and low cost.It is pointed out that the surface modification of metal bipolar plate can improve the corrosion resistance of metal matrix,and the development prospect of metal bipolar plate in the future is prospected.
维普
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