| 摘要 |
The present invention provides a novel coating material for negative electrode active materials, having both reduced irreversible capacity and reduced battery resistance. This invention is characterized by being a negative electrode coating material for lithium ion secondary batteries, that is indicated by formula (1). In formula (1), R3, R4, and R5 are C1-10 hydrocarbon groups or H. R1 and R2 have at least one functional group having electron-withdrawing properties. n is a repetition count of the structural unit. As a result of the present invention, a negative electrode having little irreversible capacity and little resistance can be provided. Furthermore, a lithium ion secondary battery having high capacity and excellent output characteristics can be provided as a result of applying said negative electrode to the lithium ion secondary battery. |
