The Effects of the Electrochemical Design Upon the Safety and Performance of the Lithium-Sulfur Dioxide Cells
Abstract
Previous studies have shown that the electrochemical balance between the anodic and the cathodic reactant affects the performance of the cell with regards to safety when it is overdischarged. Others have reported data on the forced overdischarge of cells, but they did not consider cell balance. Prior studies also showed that when excess lithium is present, a reaction occurs between lithium and acetonitrile upon the depletion of the sulfur dioxide. This leads to the formation of methane, lithium cyanide and B-imino-n-butyronitrile. This condition was found in overdischarged cells having excess lithium. This is in contrast to the following reactions that occur during the normal discharge of lithium-sulfur dioxide cells: 2Li=2Li(+) + 2e(-) (ANODIC) (1), 2SO2 + 2e = S2O4 (CATHODIC) (2), 2Li + 2SO2 = Li2S2O4 (TOTAL) (3). These investigations include a wider range of lithium-sulfur dioxide ratios, especially in the lower portion, that is, at the stoichiometric ratio of one and less.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1978
- Accession Number
- ADA097888
Entities
People
- Gabriel J. Dimasi
- John A. Christopulos
Organizations
- United States Army Communications-Electronics Command