VIOLOGEN-BASEDIONIC POLYMER BINDER, AND PREPARATION METHOD AND USE THEREOF

A viologen-based ionic polymer binder, and a preparation method and use thereof are provided, belonging to the technical field of lithium-ion batteries. The viologen-based ionic polymer binder is a polymer prepared from polymerization of a viologen-based acrylate, at least one of an acrylate and poly(ethylene glycol) methyl ether acrylate. When the viologen-based ionic polymer binder is used to prepare a cathode of a lithium-ion battery, a chain segment of the viologen-based polyacrylate could enhance bonding between cathode active materials, promote transportation of lithium ions, and thereby could improve capacity retention and recycling stability of the battery.