METHOD FOR PRODUCING SECONDARY GRAPHITE, METHOD FOR PRODUCING FLAKED GRAPHITE, SECONDARY GRAPHITE, AND FLAKED GRAPHITE

摘要

PROBLEM TO BE SOLVED: To provide secondary graphite which is hardly bent and is rigid and from which non-oxidizing flaked graphite is obtained and to provide a method for producing the flaked graphite.SOLUTION: A method for producing secondary graphite comprises the steps of: immersing raw material graphite comprising graphite or expanded graphite in an electrolytic solution prepared by using at least one of alkali metal salt and alkaline-earth metal salt as an electrolyte; applying a DC voltage to the immersed raw material graphite to perform electrochemical treatment so that the secondary graphite having an expanded distance between the adjacent graphene layers can be obtained. The method for producing the flaked graphite further comprises a step of performing exfoliation treatment on the secondary graphite to obtain the flaked graphite.