▎ 摘　　要

NOVELTY - A lithium ion battery composite cathode material comprises 22-36 pts. wt. graphene, 12-18 pts. wt. nano silicon powder, 30-40 pts. wt. butanol, 5-8 pts. wt. polypropylene elastomer, 5-10 pts. wt. oxalic acid, 6-8 pts. wt. towel gourd, 3-5 pts. wt. sodium carboxymethyl cellulose, 4-8 pts. wt. potassium permanganate, 1.5-3.4 pts. wt. sodium bicarbonate and 2-3 pts. wt. ethylenediamine. USE - Lithium ion battery composite cathode material. ADVANTAGE - The product has wide raw material source, simple preparation, and has excellent performance in the first coulombic efficiency, discharge capacity and capacity retention rate through the interaction between various raw materials. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of lithium ion battery composite cathode material comprising taking towel gourd, adding 6-10 times water, soaking for 30-60 minutes, boiling, extracting for 1.5-3 hours, adding sodium carboxymethyl cellulose, boiling for 15-25 minutes, filtering, taking nano silicon powder and butanol, ultrasonicating for 20-35 minutes, taking graphene, polypropylene elastomer, potassium permanganate, sodium bicarbonate and ethylenediamine, ball milling into 20-40 meshes, adding oxalic acid and deionized water, stirring, evaporating and drying, adding prepared raw materials, stirring, heating at 320-400 degrees C at rate of 2.5-4 degrees C/minute ( degrees C/min) under nitrogen atmosphere for 1-1.5 hours, and raising temperature to 650-820 degrees C at rate of 6-8 degrees C/min for 5-8 hours.