PYROLYTIC HARD CHARCOAL MATERIAL AND PREPARATION METHOD AND USE THEREOF

摘要

Provided is a pyrolytic hard charcoal material, and a preparation method and the use thereof. The pyrolytic hard charcoal material is a sheet material in the form similar to a two-dimensional plane which is formed by pyrolyzing a precursor of the hard charcoal and has an average thickness of 1-200 nm and a geometric surface area of 10-2000 m²/g. Micropores or mesopores are present inside the pyrolytic hard charcoal material. Also provided is a method for preparing the pyrolytic hard charcoal material. The pyrolytic hard charcoal material with a sheet-like appearance similar to that of graphene has a very wide scope of use, and can be used for a negative electrode material of a lithium ion battery or a sodium ion battery, an electrode material of an electrochemical capacitor, a carrier of the catalyst for a fuel cell and a metal-air battery electrode, and for preparing a composite material with high toughening property, an absorbent for toxic substances, an absorbent for special use, and a decolorizer and a gas sensor in food production.