Patent ID: 9079776
Filing Date: 2015-07-14
Classification: B82Y,C01B

Abstract:
1. A method for producing graphenes, comprising: (i) mixing a salt mixture comprising two or more types of salts, wherein at least one of the two or more types of salts comprises alkaline metal salts or alkaline earth metal salts, with graphite so as to produce a mixture; (ii) putting the mixture in a capsulated container and heating the mixture at an eutectic point of the salt mixture or higher so as to melt the salt mixture; (iii) inserting alkaline metal ions or alkaline earth metal ions generated by melting the salt mixture in intercalation of the graphite so as to increase an interval between layers of the graphite and to separate the layers of the graphite from each other; and removing alkaline metal ions or alkaline earth metal ions from graphite intercalation compound so as to obtain graphenes by applying alcohol having a hydroxyl (—OH) group to the graphite intercalation compound, wherein the salt mixture is mixed at an eutectic mole ratio.