Method for producing graphene
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsHidetoshi Kitaura, Naomi Nishiki, Kazuhiro Nishikawa, Kimiaki Nakaya, Atsushi Tanaka
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Abstract
A dispersion of suspended single-layer graphene, multilayer graphene, and graphite is used. A magnetic field is applied to the dispersion to separate the single-layer graphene from the dispersion. By applying the magnetic field, the single-layer graphene, the multilayer graphene, and the graphite are situated at different locations in solvent by the difference in the diamagnetism strengths of the single-layer graphene, the multilayer graphene, and the graphite.
Claims13
A method for producing graphene, the method comprising:
- applying a magnetic field using magnet to a dispersion comprising graphene, graphite, and a solvent, in a container, and locating the graphene and the graphite at different locations in the dispersion from each other;
- and
- separating the graphene from the dispersion comprising the graphite by removing the graphene with the solvent from the dispersion,
- wherein the graphene comprises single-layer graphene and multilayer graphene having in a range from two to 10 graphite layers, and the graphite is graphite having 11 or more graphite layers.
A method for producing graphene, the method comprising:
- applying a magnetic field using magnet to a dispersion comprising:
- (i) a combination of single-layer graphene and multilayer graphene having in a range from two to 10 graphite layers;
- (ii) graphite having 11 or more graphite layers;
- and (iii) a solvent, in a container, and locating the single-layer graphene, the multilayer graphene, and the graphite at different locations in the dispersion from each other;
- and
- separating at least one material selected from the group consisting of the single-layer graphene and the multilayer graphene, from the dispersion comprising the graphite by removing the at least one material with the solvent from the dispersion.
Dependencies are inferred from the claim text.