▎ 摘　　要

NOVELTY - Modifier comprises nitrogen-doped graphene, hydrogen-containing lithium titanium oxide compound, and hexagonal tungsten oxide. The hydrogen-containing lithium titanium oxide compound and hexagonal tungsten oxide are both nitrogen-doped materials. USE - Modifier. ADVANTAGE - The modifier improve the electronic conductivity, ionic conductivity, specific discharge capacity, cycle stability and service life of lithium ion battery electrode materials, and has broad application prospects in the field of lithium ion batteries. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a modifier, which involves: (A) using a chemical vapor deposition method to prepare the modifier by heating with a gaseous nitrogen source; (B) adding hydrogen-containing lithium titanyl oxide compound and hexagonal tungsten oxide to the graphene dispersion, sonicating, and then drying; and (C) using a chemical vapor deposition method to heat-treat the dried product with a gaseous nitrogen source to obtain a modifier.