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Chemical Reactions in Lithium Sulfur Dioxide Cells Discharged at High Rates and Temperatures

1984; Institute of Physics; Volume: 131; Issue: 2 Linguagem: Inglês

10.1149/1.2115554

1945-7111

William Bowden, Cheuk Lun Chow, D. L. Demuth, R Holmes,

Advanced Battery Materials and Technologies

The discharge capacity of cells was examined at high current and temperatures. D cells rated at 8 Ah delivered over 7 Ah at 5A current and 55°C, while cells discharged at 72°C gave 7 Ah at 3A. The cells were analyzed for residual lithium and sulfur dioxide. Spent cathodes were analyzed by infrared spectroscopy. A parasitic reaction was found in which and S were formed, presumably by reaction of with . This reaction became noticeable only under extreme combination of high rate and temperature.