Graphene material and production method therefor
AssigneeIncubation Alliance, Inc.
InventorsKazuo Muramatsu, Kazuma Takahashi, Hidesato Iwata, Koichi Sutani, Hideaki Yabumoto
Life of this patent
Estimating the term…
Abstract
It is an object of the present invention to provide a graphene material that is lightweight, has a large retention capacity, and is useful as a base material for sustainedly releasing a non-aqueous component, and a method of producing the same. Provided is a graphene material having a total porosity of 60.0% or more and an open porosity of 50.0% or more.
Claims10
A graphene material having a total porosity of 60.0% or more and an open porosity of 50.0% or more.
A method of producing a graphene material having a total porosity of 60.0% or more and an open porosity of 50.0% or more, the method comprising the steps of:
- (I-1) heat-treating a thermally expandable graphite to obtain a thermally expanded graphite;
- (I-2) pressure-molding the thermally expanded graphite to obtain a pressure-molded body;
- and
- (I-3) subjecting the pressure-molded body to open-pore treatment by heating to obtain a graphene material.
A method of producing a graphene material having a total porosity of 60.0% or more and an open porosity of 50.0% or more, the method comprising the steps of:
- (II-1) heat-treating a thermally expandable graphite to obtain a thermally expanded graphite;
- (II-2) immersing the thermally expanded graphite in a solvent, subjecting it to crushing treatment, then collecting a supernatant, and separating the solvent from the supernatant to obtain a solid, followed by pulverizing the solid to obtain a pulverized body;
- and (II-3) pressure-molding the pulverized body to obtain a graphene material.
A method of producing a thermally expanded graphite, the methods comprising the steps of:
- (a) preparing a vertically erected tube that is surrounded by a heater to be heated inside thereof by the heater;
- (b) continuously supplying a thermally expandable graphite into the tube from the lower end of the tube on an air flow;
- (c) converting the thermally expandable graphite into a thermally expanded graphite by heat-treating the thermally expandable graphite while the thermally expandable graphite passing from the bottom to the top inside the tube on an air flow;
- and
- (d) continuously obtaining the thermally expanded graphite from the upper end of the tube.
Dependencies are inferred from the claim text.