摘要:
The present invention provides a nonaqueous electrolyte secondary battery, comprising a positive electrode, a negative electrode containing a carbon material having an immersion heat ratio (&Dgr;Hin/&Dgr;Hih) defined by formula (1), and a nonaqueous electrolyte: 1.2≦&Dgr;Hin/&Dgr;Hih≦2 (1) where &Dgr;Hih denotes the immersion heat for n-heptane of the carbon material, and &Dgr;Hin denotes the immersion heat for 1-nitropropane of the carbon material.