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Lightweight polymer–carbon composites with high specific electrical conductivity at a carbon content below 40vol.% were developed. The electrical and mechanical properties and the hydrogen permeability of carbon fiber and particle reinforced liquid crystalline polymers were examined. Vectra ® A 950, SIGRAFIL ® carbon fibers and Vulcan ® XC 72 R carbon black were employed. The...
Bipolar plates are major components of fuel cell (FC) stacks and they make up a large portion of the stack volume and cost. In order to reduce their weight and fabrication cost, polymer composite materials with various carbon conducting fillers are tested for use as composite bipolar plates for FCs. The composite materials are prepared by using graphite with a small vol.% of carbon black (CB), multi-walled...
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