To provide a nonaqueous electrolyte secondary battery with a large capacity, which has the excellent charging and discharging cycle characteristic, by specifying the grain diameter and the specific surface area of the carbon material to be used for the negative electrode active material.
This nonaqueous electrolyte secondary battery is provided with a positive electrode, in which lithium contained oxide is used as the active material, the nonaqueous electrolyte, a negative electrode, in which carbon material is used as the active material. Grain diameter of the carbon material to be used for the negative electrode is regulated at 10μm or less, and the specific surface area thereof is regulated at 15m2/g or less. As the positive electrode active material, at least one kind of LiCoO2 LiNiO2, LiMn2O4 is used. As the carbon material, at least one kind of natural graphite, cokes, mesocarbon micro beads, synthetic resin carbon as the compound, which contains lithium ion, is used. A nonaqueous electrolyte secondary battery at a large initial capacity, which has the excellent charging and discharging cycle characteristics and in which a capacity change due to a large current is reduced, is obtained by using this carbon material.
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