NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

PURPOSE:To provide a nonaqueous electrolyte secondary battery excellent in recycle characteristic by using a positive electrode composed of transition metal oxide and a conducting agent including a carbon material having a specific (d) value and a negative electrode made of metal lithium. CONSTITUTION:A nonaqueous electrolyte secondary battery using a nonaqueous electrolyte comprises a positive electrode formed of a positive electrode active material composed of transition metal oxide or transition metal composite oxide having a potential of 2V (vs. Li/Li<+>) or higher in an electric charging/ discharging region and including a conducting agent for enhancing conductivity, and a negative electrode made of a negative electrode material capable of storing or discharging metal lithium or a lithium ion. The conducting agent includes at least 10wt.% of a carbon material having a (d) value (d002) of a grid surface (002) is 3.358Angstrom or less by X-ray analysis measurement or 1000Angstrom or more of a size (Lc) of a crystallite in the C axis direction.