Sealed Primary Lithium-Inorganic Electrolyte Cell.
Quarterly rept. no. 7, 1 Sep-30 Nov 75,
MALLORY (P R) AND CO INC BURLINGTON MASS LAB FOR PHYSICAL SCIENCE
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Attention was focussed on the storability of the LiSOCl2 D cell and the voltage-delay problem after investigating the explosion encountered on high rate discharge, short circuiting and overdischarge. The 45 C storage tests on the LiSOCl2 hermetic D cells showed that the cells retained a substantial portion of their initial capacity even after 1 year at 45 C, when tested at 25 C at 0.25A. At high rates, there is a significant degradation of the cell capacity. The voltage-delay, though quite severe at high rates at both 25 and -30C, is not present at low rates 0.25A. Furthermore, it appears that partial discharge and intermittent anode pulsing tend to alleviate the voltage-delay problem for low rates of discharge. At high rates the delay is still quite appreciable. An SEM investigation on the Li anode film is being made in an effort to increase our understanding of the mechanism of the voltage-delay.
- Electrochemical Energy Storage