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• W1969788191 abstract "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 estab- lished 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. Conductive composite bipolar plate is the mainstream development direction of bipolar plate. The composite mate- rials consisting of conductive graphite filler and resins adhe- sives can be produced into bipolar plates with flow field through compression moulding or injection moulding tech- nology, which is high production efficiency and easy to be mass produced, and it is a significant decline in costs. Poly- mer composite bipolar plate has the same performance of corrosion resistance as graphite bipolar. Graphite polymer composite bipolar plates are made of composite materials filled with high content conductive filler. The high conductivity of bipolar plate demands for high content of graphite. But the mechanical performance will decrease if the content of graphite is much too high. So, the key problem of how to meet the requirement of conduc- tivity of a composite bipolar plate with the addition of a small amount of conductive fillers is needed to be resolved. Theoretical analysis is necessary on the basis of the conduc- tive mechanisms of the composite materials. There are many kinds of theories about the electric conductivity mechanism which is the result of the combination of those theories in general view. However, most of the theories are suit for composite materials filled with low content conductive filler. For those filled with high content, we argues that the mutual contact of the filler particles is the main contribution to the conductivity of composite materials, while the effect of the tunnel current on the conductivity is so little that it can be negligible." @default.
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• W1969788191 date "2009-02-10" @default.
• W1969788191 modified "2023-09-22" @default.
• W1969788191 title "Theoretical Analysis of Conductivity for Composite Bipolar Plate" @default.
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• W1969788191 doi "https://doi.org/10.2174/1875932700902010001" @default.
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