| 摘要 |
PROBLEM TO BE SOLVED: To restrain capacity deterioration accompanying cycling, especially while keeping a high capacitance by improving electrochemical performance of a nonaqueous electrolytic solution battery that a spinel-based lithium manganese oxide is used as an electrode active material. SOLUTION: This lithium secondary battery uses lithium, including metallic oxide which can feeds/discharges lithium in an positive electrode. Lithium including metallic oxide is represented by a general formula (chemical formula 1): Li(Mn2-x /Lix )O4 (0<=X<=0.05), and nonuniform distortion η of a crystallite for a distortion X-ray diffraction pattern is within a range 0<=η<=1.25×10<-3> in formula (1); βcosθ=λ/D+2ηsinθ(where represents β integrated width (rad), θthe diffraction angles (degrees), λ is 1.54056 Å (CuK α), D the crystal size (Å), and η the non-uniform distortion of crystallite are represented respectively). |
