| Definition: | conductive plate separating individual cells in a fuel cell stack, acting as current collector and providing mechanical support for the electrodes or membrane electrode assembly Note 1 to entry: The bipolar plate usually incorporates flow fields on either side for the distribution of reactants (fuel and oxidant) and removal of products, and can also contain conduits for heat transfer. The bipolar plate provides a physical barrier to avoid the mixing of oxidant, fuel and coolant fluids.
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