JP2008300244A5 - - Google Patents

Claims (10)

In the positive electrode for a non-aqueous electrolyte secondary battery having an active material layer containing an active material, LiNi _1-x Ti _x O ₂ (where 0 <x <0. 7), and a positive electrode for a non-aqueous electrolyte secondary battery. The non-aqueous electrolyte according to claim 1, wherein the active material comprises a lithium transition metal composite oxide (excluding LiNi _1-x Ti _x O ₂ (where 0 <x <0.7)). Secondary battery positive electrode.   3. The non-specificity according to claim 1, wherein I (003) / I (104), which is a peak ratio between the (003) plane and the (104) plane in the X-ray diffraction pattern of the compound, is 0.4 to 0.9. Positive electrode for water electrolyte secondary battery.   The positive electrode for a non-aqueous electrolyte secondary battery according to any one of claims 1 to 3, wherein a ratio of the amount of the compound to the amount of the active material is 5 to 30% by weight. An additive for a positive electrode active material for a non-aqueous electrolyte secondary battery, comprising a compound represented by LiNi _1-x Ti _x O ₂ (where 0 <x <0.7).   A non-aqueous electrolyte secondary battery comprising the positive electrode according to claim 1.   The nonaqueous electrolyte secondary battery according to claim 6, comprising a negative electrode having an active material layer containing a negative electrode active material made of a material containing Si or Sn.   The active material layer of the negative electrode contains particles of a negative electrode active material containing Si or Sn, and at least a part of the surface of the particles is coated with a metal material having a low ability to form a lithium compound, and the metal material The nonaqueous electrolyte secondary battery according to claim 7, wherein voids are formed between the particles coated with. When charging the nonaqueous electrolyte secondary battery according to any one of claims 6 to 8, the precharge cutoff potential, which is charging performed for the first time after the battery is assembled, is Li / Li. ⁺ The non-aqueous electrolyte secondary battery adjustment method is characterized in that the voltage is set to 4.2 to 5.0 V with reference to. The non-aqueous electrolyte secondary battery according to claim 9, wherein the charge is performed by setting a cut-off voltage of charge after the first time that is charge after the pre-charge to be equal to or higher than the cut-off voltage of the pre-charge. Adjustment method.