Polymer electrolyte-based Li ion batteries for space power

Computer Science – Performance

Scientific paper

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Performance Characteristics Of Energy Conversion Systems, Figure Of Merit

Scientific paper

Polyacrylonitrile-based electrolytes have been identified to be appropriate for the fabrication of solid-state Li ion batteries. Prototype battery cells have been fabricated with spinel LiMn2O4 cathode and either a graphite or a petroleum coke anode. Lower capacity fade and longer cycle life were observed in the petroleum coke-based cells. A specific energy of >120 Wh/kg and a cycle life of >500 cycles at the C/3 rate have been demonstrated in these cells. The capacity fade rate in coke/LiMn2O4 cells has been found to be between 0.04 and 0.05% per cycle, about half of that in cells with the graphite anode.

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