Accession Number : ADA118363

Title :   Investigation of Lithium Sulfur Dioxide (Li/SO2) Battery Safety Hazards -- Chemical Studies.

Descriptive Note : Final rept. 24 Dec 80-23 Dec 81,

Corporate Author : EIC LABS INC NEWTON MA

Personal Author(s) : Abraham,K M ; Rupich,M W ; Pitts,L

Full Text :

Report Date : Apr 1982

Pagination or Media Count : 109

Abstract : The chemistry associated with the discharge and forced overdischarge of the Li/SO2 cell was investigated in detail. A procedure for the quantitative determination of Li2S2O4 in discharged Li/SO2 cells is described. The amount of Li2S2O4 found in cells discharged to potentials down to zero volt was in very good agreement with the discharge stoichiometry, 2Li + 2SO2 yields Li2S2O4. The Li2S2O4 formed in the carbon cathode was also characterized by infrared, ESCA, and X-ray analyses. A number of organic compounds including CH4 and 3,5-diamino-2,4-hexenenitrile have been identified in forced overdischarged cells. Products identified in cells which vented during forced overdischarge include: CO2, CS2, COS, H2S, CH4, C2H4, C2H2, Li2S, and Li2SO3.

Descriptors :   *Low temperature batteries , *Lithium , Sulfur oxides , Electrochemistry , Safety , Hazards , Chemical reactions , Stoichiometry , Electric discharges

Subject Categories : Electrochemical Energy Storage

Distribution Statement : APPROVED FOR PUBLIC RELEASE