▎ 摘　　要

NOVELTY - The method involves adding a metal tin with dilute nitric acid in a low-in-ice bath condition. A regulating pH value of ammonium hydroxide solution is 7. A positively charged surface is coated with sol-gel. Graphite oxide dilute solution is added with water. Graphite alkene negative charge glue solution is dissolved in graphene oxide negative glue solution. An upper part of colorless clear bottom black flocculent precipitate is centrifuged. In-situ static coagulation solution is obtained. A graphene modified tin dioxide lithium ion battery cathode material is obtained. USE - Graphene modified tin dioxide lithium ion battery cathode material preparation method. ADVANTAGE - The method enables processing neutral water solution without need to add other reagents, achieving easy separating and washing effect, improving electrochemical capacity of the lithium ion battery negative electrode material with better circulation property and multiplying power property and achieving wide range application in lithium battery industry. DESCRIPTION OF DRAWING(S) - The drawing shows a photograph illustrating a graphene modified tin dioxide lithium ion battery cathode material preparation method.'(Drawing includes non-English language text)'