Method for continuously mass-manufacturing graphene using high-temperature plasma emission method and graphene manufactured by manufacturing method
AssigneeKB-ELEMENT Co., Ltd.
InventorsKyoung Jeong Bae, Sul Hwa Choi, Dinh Huong Nguyen
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Abstract
A method for continuously mass-manufacturing graphene using thermal plasma, the method for continuously mass-manufacturing graphene includes the steps of: (a) injecting an inert gas into a plasma device to generate plasma; (b) injecting expandable graphite and graphite intercalation compounds (GIC) into the plasma device in constant amounts; and (c) allowing the expandable graphite and GIC to be expanded by thermal plasma treatment so that graphene is exfoliated.
Claims4
A method for continuously mass-manufacturing graphene using thermal plasma, the method for continuously mass-manufacturing graphene comprising the steps of:
- (a) injecting an inert gas into a plasma device to generate plasma;
- (b) injecting expandable graphite and graphite intercalation compounds (GIC) into the plasma device in constant amounts;
- (c) allowing the expandable graphite and GIC to be expanded by thermal plasma treatment so that graphene is exfoliated;
- (d) passing the exfoliated graphene through a vacuum chamber so that the exfoliated graphene is collected through a collector;
- and
- (e) cooling the collected graphene to obtain graphene in the form of a powder,
- wherein the expandable graphite of the step (b) has an average size of 0.1 to 2 mm, and the expandable graphite and GIC are injected in constant amounts in a speed range of 400 to 800 g/hr through a hopper,
- wherein the following Equation 1 is satisfied:
- 99
- ≤
- Y
- X
- ×
- 100
- ≤
- 100
- ,
- [
- Equation
-
- 1
- ]
- wherein X indicates the amount (g) of purified graphite contained in the expandable graphite injected in the step (b), and Y indicates the amount (g) of graphene obtained in the step (e).
Dependencies are inferred from the claim text.