NON-AQUEOUS ELECTROLYTE BATTERY

摘要

The invention aims to provide a nonaqueous electrolyte battery equipped with a negative electrode having an operating potential of 1.2 V (vs. Li/Li + ) or higher, which is represented by lithium titanate, to keep a low-temperature-output performance after storage at high temperature. The aim can be accomplished by applying an additive typified by tris(trimethylsilyl) phosphate, tris(trimethylsilyl) borate, and tetrakis(trimethylsiloxy) titanium (Chem. 3) to a nonaqueous electrolyte containing a chain carbonate and/or a chain carboxylate as a main solvent (contained at a ratio of 70 volume % or higher). It is preferable that 0 ‰¤ a < 30 is satisfied, in which "a" denotes the volume of a cyclic carbonate among carbonates having no carbon-carbon double bond in the entire volume, defined as 100, of the carbonates having no carbon-carbon double bond and chain carboxylates in a nonaqueous solvent contained in the nonaqueous electrolyte (0 < a < 30 in the case no chain carboxylate is contained).