Fluorinated Carbon Composite Cathode for a High Energy Lithium Battery (Briefing Charts)
Army Research Laboratory Adelphi
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Lithiumcarbon monofluoride LiCFx primary batteries have double energy density overstate-of-the-art LiMnO2 and LiSO2 primary batteries theoretically 2203 Whkg vs. 847and 1150 Whkg, respectively. However, these batteries suffer initial voltage delay and high polarization, especially in high power or low temperature operating conditions. This invention relates to a high energy density LiCFx primary battery technology with substantial reduction in initial voltage delay and battery discharge polarization. These significant improvements are achieved by simply adding small amounts of metal oxide additive and carbon fiber into the existing cathode formulation. All added materials are inexpensive and commercially available, and the technology does not require additional production process. The ARL team has achieved proof-of-concept and reduced the invention to practice, with reproducible results.