リチウムイオン非水電解質二次電池

Japanese Patent JP4061668

B2

PROBLEM TO BE SOLVED: To provide a lithium ion non-aqueous electrolyte secondary cell excellent in charge/discharge cyclic characteristics. SOLUTION: In a secondary cell formed out of a positive electrode where metallic complex oxide containing lithium is used as an active material, a negative electrode where metallic complex oxide having an amorphous structure as the active materiel, and of non-aqueous electrolyte, the positive electrode active material shall be lithium complex oxide containing nickel, which is indicated by the composition of Li, Ni, Coy-z , and Mz O2-a Xb (M represents the elements of the thirteenth group and the fourteenth group in a periodic table, more than one kind of elements selected out of transition metal elements other than Ni and Co, and X represents a halogen element, 0.2