| 摘要 |
PURPOSE: To prevent decreasing safety due to repeating a charge/discharge, by using a lithium metal containing conductive non-metal powder incapable of inserting/detaching a lithium ion in a negative electrode of a lithium secondary battery. CONSTITUTION: By including conductive non-metal powder incapable of inserting/ detaching a lithium ion in a lithium metal, depositing lithium is preferentially generated from a contact surface with the lithium metal. The conductive non- metal powder incapable of inserting/detaching a lithium ion serves as a nucleus even when deposited, to grow a crystal. From this fact, a uniform deposition form as a negative electrode total unit can be realized, to prevent easily generating branch-shaped lithium even when repeated a charge/discharge over a long period. Even in the case of separating by forming the branch-shape lithium, by contact with the conductive non-metal powder which is incapable of inserting/ detaching a lithium ion, since reusing in a charge/discharge can be made, improving a life can be attained. |
