NON-AQUEOUS ELECTROLYTE SECONDARY CELL AND METHOD FOR MANUFACTURING SAME

摘要

The nonaqueous electrolyte secondary battery of the present invention includes a positive electrode (1), a negative electrode (2), a separator (3) disposed between the positive electrode (1) and the negative electrode (2), and a nonaqueous electrolyte (15). The positive electrode (1) contains a positive electrode active material composed of a lithium-containing transition metal oxide having a layered crystal structure. The negative electrode (2) contains a negative electrode active material composed of a Ti-based oxide and an additive composed of fluorinated carbon that reacts with lithium at a more noble potential as compared to the negative electrode active material. In the nonaqueous electrolyte secondary battery of the present invention, the battery voltage reaches a discharge cut-off voltage by a potential change in the negative electrode (2).