Lithium ion secondary battery negative electrode water based slurry (slurry), lithium ion secondary battery negative electrode active material layer, and lithium ion secondary battery

摘要

PROBLEM TO BE SOLVED: To provide an aqueous slurry for lithium ion secondary battery negative electrode capable of enhancing the cycle life of a lithium ion secondary battery, and to provide a negative electrode active material for lithium ion secondary battery, and a lithium ion secondary battery.SOLUTION: An aqueous slurry for lithium ion secondary battery negative electrode contains a metal-based active material containing at least one of a carbon-based active material, a silicon-based active material and a tin-based active material, a salt of acrylic acid or an acrylic acid derivative, and a copolymer of acrylonitrile or an acrylonitrile derivative.