Patent ID: 6017656
Filing Date: 2000-01-25
Classification: H01M,Y02E

Abstract:
An electrochemical cell comprising:(a) an anodc comprising lithium;(b) a cathode comprising a silver vaniadium oxide material;(c) an electrolyte comprising a solute and a solvent mixture of a first propylene carbonate solvent and a second 1,2-dimethoxyethane solvent, the solvent mixture further comprising a third solvent that reduces the solubility of the silver vanadium oxide material and that is miscible with the solvent mixture of propylene carbonate and 1,2-dimethoxyethane, the third solvent being different from the first and second solvents, the third solvent comprising at least one compound having a chemical formula represented by ArOC(O)OAr, ArOC(O)OAr', ArOC(O)OR, ROC(O)OR, ROC(O)OR', R-COC(O)OC-R, Ar-COC(O)OC-R, R-COC(O)OC-R', Ar-COC(O)OC-Ar, and Ar-COC(O)OC-Ar', Where R or R' are aliphatic groups or hydrogen, C is carbon, O is oxygen, Ar is an aryl group or a substituted aryl group, and Ar' is an aryl group or a substituted aryl group.