| 摘要 |
PROBLEM TO BE SOLVED: To provide a negative electrode agent for a lithium ion secondary battery and a negative electrode for a lithium ion secondary battery with which a lithium ion secondary battery excellent in cycle characteristics can be obtained, and a lithium ion secondary battery excellent in cycle characteristics.SOLUTION: The negative electrode agent for a lithium ion secondary battery of the present invention contains: one or more kinds of compounds selected from a group consisting of (a1) polyvinylidene fluoride and (a2) polyacrylic acid, polyvinyl alcohol, polyethylene oxide and polyethylene glycol; and a metal oxide. The negative electrode for a lithium ion secondary battery of the present invention comprises a collector and an electrode active material layer which is provided on the collector and contains the negative electrode agent for a lithium ion secondary battery of the present invention. The lithium ion secondary battery of the present invention comprises a positive electrode, the negative electrode for a lithium ion secondary battery of the present invention and an electrolyte. |
