BINDER FOR LITHIUM-ION BATTERY POSITIVE ELECTRODE, SLURRY FOR FORMING LITHIUM-ION BATTERY POSITIVE ELECTRODE MIXTURE LAYER, POSITIVE ELECTRODE FOR LITHIUM-ION BATTERY, AND LITHIUM-ION BATTERY

A binder for a lithium-ion battery positive electrode, being for binding a positive electrode active material, a conductive additive and a current collector in a lithium-ion battery, and comprising a chelating group-containing polymer and a flexible polymer.