Accession Number : AD0763478

Title :   Lithium Anode Cells Operating at Room Temperature in Inorganic Electrolytic Solutions.

Descriptive Note : Final rept.,

Corporate Author : GTE LABS INC WALTHAM MASS

Personal Author(s) : Auborn,James J. ; French,Kenneth W. ; Lieberman,Sheldon I. ; Shah,Vinod K. ; Heller,Adam

Report Date : 01 JUN 1973

Pagination or Media Count : 34

Abstract : Lithium anode electrochemical cells have been operated at room temperature using electrolytic solutions of lithium salts in inorganic solvents such as phosphorus oxychloride, thionyl chloride and sulfuryl chloride. Lithium metal can be electrodeposited from these solutions accompanied, in the case of chlorine containing electrolytes, by the simultaneous electrogeneration of chlorine at the positive electrode. The resulting lithium/chlorine electrochemical cells have open circuit potentials of 4.0 to 4.3V, depending on the presence of excess Lewis acid in the electrolyte. The solvents are compatible with both lithium metal and with strong oxidants including chlorine (Cl2), cupric acid (CuF2), polycarbon monofluoride (CF)n, and tungsten trioxide (WO3) which can be used as cathode materials. The solvents themselves, while difficult to oxidize, can be electrochemically reduced at various catalytic surfaces (such as carbon black and metals) and act as cathode depolarizers. This catalytic solvent reduction process leads to cells with exceptionally stable voltages and energy densities in excess of 500 Wh/kg. (Author)

Descriptors :   (*LITHIUM, *ELECTROCHEMISTRY), SOLVENTS, CHLORINE, ELECTROLYTES, PHOSPHORUS COMPOUNDS, SULFUR COMPOUNDS, OXYCHLORIDES, CARBON, ELECTRODES, POLARIZATION, LITHIUM COMPOUNDS, CHLORIDES

Subject Categories : Physical Chemistry
      Electrochemical Energy Storage

Distribution Statement : APPROVED FOR PUBLIC RELEASE