RESIN FOR COATING LITHIUM-ION-BATTERY ACTIVE MATERIAL, RESIN COMPOSITION FOR COATING LITHIUM-ION-BATTERY ACTIVE MATERIAL, AND COATED ACTIVE MATERIAL FOR LITHIUM-ION BATTERY

An object of the present invention is to provide a resin for coating an active material for lithium ion batteries which can prevent expansion of the electrode without inhibiting conduction of lithium ions. The resin for coating an active material for lithium ion batteries according to the present invention has a liquid absorbing rate of 10% or more when the resin is immersed in an electrolyte solution, and a tensile elongation at break of 10% or more when the resin is saturated with the electrolyte solution.