TERMINAL-EQUIPPED BATTERY

摘要

A terminal-equipped battery provided with an electricity-generating element and an outer casing that contains said electricity-generating element. Said electricity-generating element is provided with a positive electrode, a negative electrode, a separator interposed therebetween, and a non-aqueous electrolyte. The negative electrode contains a mixture containing: a silicon-containing negative-electrode active material containing an amorphous silicon phase; and a binder containing polyacrylic acid. The non-aqueous electrolyte contains: a non-aqueous solvent containing vinyl ethylene carbonate; and a lithium salt dissolved in said non-aqueous solvent. At least one lead terminal is welded to the outer casing. The molar ratio of the vinyl ethylene carbonate to the amorphous silicon phase in the negative-electrode active material is 0.09 to 0.17.