Safety Studies of Lithium-Sulfur Dioxide Cells.
Abstract
The objective of this program was to improve the abuse resistance of Li/SO2 cells. LO26S cells were chosen for the study. We studied the effect of cell design variables such as Li:SO2 ratio, electrode configuration and electrolyte compositions on the abuse resistance as well as the performance of the LO26S cells in order to establish the trade-offs between the cell performance and the increased abuse resistance. We found several cell designs which improved the abuse resistance of the LO26S cells for abuses consisting of a 2A forced discharge at -30C. This design entails a capacity penalty of approximately 3 A.Hr at low rates over the standard LO26S cells. However, at high rates (2A or more) there was no capacity penalty. Several design principles contributing to the safety of the Li/SO2 cells have been identified. The cell design variables did not appear to have any significant effect on the abuse resistance of cells for abuses such as charging. In general LO26S cells of all designs were abuse resistant towards charging at currents below 2A. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1978
- Accession Number
- ADA062708
Entities
People
- A. N. Dey