▎ 摘　　要

NOVELTY - Preparing single-ion conductive polymer composite material, comprises (i) dissolving 2-8 g sodium styrene sulfonate in 10-25 ml thionyl chloride under inert atmosphere to perform chlorination, (ii) adding triethylamine, trifluoromethanesulfonamide and dimethylaminopyridine catalyst to the step (i) product under inert atmosphere, (iii) adding 3-9 g potassium carbonate to step (ii) product for potassium ion exchange, and adding lithium perchlorate for lithium ion exchange, (iv) mixing the step (iii) reaction product with poly(ethylene glycol) methacrylate organic monomer, polyethylene glycol methyl ether methacrylate and azobisisobutyronitrile in dimethylformamide solvent under inert atmosphere to react at 60-100 degrees C, and (v) adding the step (iv) reaction product and nano ceramic powder to solvent under inert atmosphere, dispersing, adding isocyanate crosslinking agent, reacting at 60-90 degrees C, and cooling to room temperature to obtain 5-30 wt.% nano-ceramic powder content of final product. USE - The single-ion conductive polymer composite material is useful for lithium cathode electrode protection of lithium metal secondary battery i.e. CR2032 button battery (all claimed). ADVANTAGE - The single-ion conductive polymer composite material: can effectively reduces concentration polarization problem caused by lithium salt electrolyte; protects lithium cathode and inhibits growth of lithium dendrites; utilizes simple and easily available raw materials; simple and easy preparation process; and is environmentally friendly and suitable for industrial production.