[Problem]
To provide a conductive resin composition for electrodes which is excellent in dispersibility and oxidation resistance. To provide: an electrode composition employing the conductive resin composition for electrodes and having a low viscosity; an electrode employing the electrode composition and having a low electrode plate resistance; and a lithium ion battery having a high energy density, high output characteristics and a high cyclability.
[Solution]
A conductive resin composition for electrodes, comprising a dispersant, a conductive agent, and a binding material, wherein: the dispersant comprises a graft copolymer in which a monomer containing acrylonitrile as a main component is grafted onto polyvinyl alcohol; the average degree of polymerization of the polyvinyl alcohol is 300 to 3,000 and the degree of saponification of the same is 90 mol % to 100 mol %; and the polyvinyl alcohol content and the polyacrylonitrile content in the graft copolymer are, respectively, 10 mass % to 40 mass % and 90 mass % to 60 mass %.