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U.S. Department of Energy
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Long-term lithium battery tests. II. [Li/SO/sub 2/ and Li/(CF/sub n/)]

Technical Report ·
OSTI ID:5356011
Data from the second 6-month period of a 6-year test of ambient-temperature lithium batteries are reported. Lithium-sulfur dioxide cells from three manufacturers and lithium-polycarbon monofluoride cells from a fourth are included. One year's storage at room temperature or below had a minor effect on capacity. Storage at 49/sup 0/C resulted in a significant capacity loss. Two mechanisms were identified that may result in premature failure of cells stored at elevated temperatures: corrosion of an aluminium-to-tantalum weld in the positive terminal, and an attack on the glass-to-metal seal in the header. Continuous discharge under a pulsed load resulted in a considerable loss of capacity. A white deposit containing oxide, sulfate, and some carbonate was found in these cells at the anode-to-case contact. 3 figures, 2 tables.
Research Organization:
Sandia Labs., Albuquerque, NM (USA)
DOE Contract Number:
AC04-76DP00789
OSTI ID:
5356011
Report Number(s):
SAND-79-1383
Country of Publication:
United States
Language:
English