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Conductive composite bipolar plate is made of composite materials filled with high content conductive filler. The conductivity of this bipolar plate is influenced by many factors. It is difficult to use a formula to accurately calculate its conductivity, and current models have certain defaults. In this paper, in view of the contact resistance, a model is established and the conductivity formula has been educed. The conductivity formula reveals some factors that influence the conductivity, especially the particle size and pressure. Several ways to improve the conductivity of the composite material are discussed.
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Pan et al. (2009) studied this question.
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