| 摘要 |
PROBLEM TO BE SOLVED: To obtain a graphite based carbon material provided with high intitial charge and discharge efficiency as a graphite based carbon material for a negative electrode material of a lithium secondary battery, and to provide a manufacturing method thereof and the lithium secondary battery using the carbon material as the negative electrode material. SOLUTION: This modified graphite based carbon material is a graphite based carbon material covered with a vanadium oxide film. The modified graphite based carbon material is manufactured by being coated with the vanadium oxide film by a sol-gel method using a tri-ethoxy vanadium solution. The non- aqueous electrolyte based lithium secondary battery uses the modified graphite based carbon material as the negative electrode material. |
