▎ 摘　　要

NOVELTY - Preparation of titanium dioxide/carbon composite interlayer involves preparing oxalic acid and sodium dodecyl benzene sulfonate water/ethanol solution (solution 1), soaking carbon material into the solution, dissolving titanium source and amount of acid in the ethanol solution (solution 2), adding solution 2 to the solution containing carbon material, heating and stirring until the precipitate is complete, drying, and calcining in a tubular furnace. USE - Preparation method of titanium dioxide/carbon composite interlayer for lithium ion battery used in portable electronic device, electric automobile, and intelligent network. ADVANTAGE - The method enables to prepare titanium dioxide/carbon composite interlayer, which has excellent mechanical strength, thermal stability, chemical stability, and chemical stability.