| abstract |
(57) [Problem] To improve the discharge capacity and cycle characteristics of a non-aqueous electrolyte secondary battery. SOLUTION: As an active material of a positive electrode which is laminated with a negative electrode and a separator and spirally wound to form an electrode group, at least one or more selected from the group consisting of transition metals, IIA metals, and IIIA metals. At least one of metal hydroxides, oxides, and carbonates, D50 is 5 to 50 m, and D90 is 90 m m or less, and a lithium compound containing no particles having a particle diameter of 100 μm or more. A lithium composite metal oxide which has been fired and ground for a long time is used. |