Takabumi Fujii

Evaluation of cathode materials for the lithium/ carbonmonofluoride battery

Abstract The lithium—carbonmonofluoride (CF)n system is one of the most promising systems for high energy density primary batteries and is described in this paper. In this system, discharge performances mainly depend on cathode materials, (CF)n, prepared by fluorinating various carbon materials at moderate temperatures. Two kinds of active carbons, graphite and coke, were chosen and tested in cells to determine the best carbon material for the carbonmonofluoride cathode. The (CF)n cathode made of coke has been shown to have excellent discharge performances, good storage behavior, and an energy density of 140 W h/kg in small button cell sizes.