Method of manufacturing ceramic coated graphite

摘要

Disclosed is a method of manufacturing ceramic coated graphite having electric resistance in a range from 108 to 1016 Ω/sq via a sol-gel method, the ceramic coated graphite comprising graphite; and ceramic chemically bonded to a lateral defect area of the graphite, wherein the graphite is oval graphite having an aspect ratio selected from the group consisting of 10:1 to 200:1, and the ceramic is at least one type selected from the group consisting of magnesium oxide, aluminum oxide, zinc oxide, zirconium oxide, and silica.

主权项

1. A method of manufacturing ceramic coated graphite, the method comprising:
introducing 0.1 to 70 parts by weight of graphite having an average diameter from 10 nm to 1000 μm based on 100 parts by weight of an alcohol solvent and sufficiently dispersing the graphite in the alcohol solvent to obtain a dispersed solution; introducing an alkaline catalyst to the dispersed solution to titrate the dispersed solution to pH9 to pH12; and coating a surface of the graphite with ceramic by adding 10 to 300 parts by weight of a ceramic precursor and 1 to 100 parts by weight of a pyrene derivative or a salt thereof selected from the group of consisting of 1-pyrenebutyryl chloride, 1-pyrenebutyryl hydrazide, 1-pyrenevaleric acid and 1-pyrenebutyric acid N-hydroxysuccinamide for coating based on 100 parts by weight of the graphite to the dispersed solution, wherein the graphite is oval graphite having an aspect ratio selected from the group consisting of 10:1 to 200:1, wherein the ceramic is at least one type selected from the group consisting of magnesium oxide, aluminum oxide, zinc oxide, zirconium oxide, and silica.