NONAQUEOUS ELECTROLYTE BATTERY AND BATTERY PACK

摘要

According to one embodiment, a nonaqueous electrolyte battery (20) that includes a positive electrode (5), a negative electrode (3), and a nonaqueous electrolyte is provided. The positive electrode (5) includes a positive electrode active material. The negative electrode (3) includes a negative electrode active material that absorbs and releases lithium at 0.4 V vs. Li/Li + or higher. The nonaqueous electrolyte is dissolved in a nonaqueous solvent that includes ³-butyrolactones substituted by a hydrocarbon substituent at an alpha position.