| abstract |
PROBLEM TO BE SOLVED: To provide a composition for forming a porous insulating layer capable of satisfactorily improving the short circuit resistance of a lithium ion secondary battery on the surface of a positive electrode or a negative electrode for a lithium ion secondary battery, and a porous formed by the composition Provided are a positive electrode and a negative electrode for a lithium ion secondary battery having a conductive insulating layer, and a lithium ion secondary battery having the positive electrode or the negative electrode. SOLUTION: A porous insulating layer forming composition containing at least insulating particles having a heat resistant temperature of 150 ° C. or higher, poly N-vinylacetamide, and a solvent, and the porous insulating layer forming composition. Lithium ion secondary battery having at least one of a positive electrode for a lithium ion secondary battery and a negative electrode for a lithium ion secondary battery, and a positive electrode for a lithium ion secondary battery and a negative electrode for a lithium ion secondary battery having a porous insulating layer The battery solves the above problems. [Selection] Figure 1 |