NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

PURPOSE:To provide negative electrode material in high energy density without generation of dendrite so as to obtain a secondary battery with high degree of reliability in the case of a non-aqueous electrolyte secondary battery containing Li salt. CONSTITUTION:In a non-aqueous electrolyte. secondary battery having a positive electrode 7 having reversibility for charge and discharge, non-aqueous electrolyte including lithium and a negative electrode made of carbon material, carbonaceous material with graphitization resistance having spherical shape in which the face gap of (002) determined by X ray wide angle diffraction method is 3.50 Angstrom, size of crystal(Lc) in the C axis direction is 100 Angstrom and bulk specific gravity is 0.6 is used for the negative electrode 8.