Title:
METHOD FOR CONTINUOUSLY PREPARING GRAPHENE OXIDE NANOPLATELET
Document Type and Number:
WIPO Patent Application WO/2017/162155
Kind Code:
A1
Abstract:
Provided is a method for continuously preparing graphene oxide nanoplatelets on the basis of an electrochemical treatment, comprising using a continuous graphite product such as a flexible graphite coil, strip or carbon fiber wire as a raw material, successively subjecting same to two step treatments, i.e. an electrochemical intercalation and an electrolytic oxidation stripping, under the drive of a feeding device, and stripping same into the graphene oxide nanoplatelets. The electrochemical intercalation is in a concentrated acid, using a graphite material as an anode and energizing under a soaking condition such that acid radical ions enter into graphite interlamination under the drive of an electric field, to form an intercalated graphite continuous material with Stage I or lower intercalation. The electrolytic stripping is using the intercalated continuous graphite material as an anode, energizing in an aqueous electrolyte solution to perform electrolytic stripping, and performing oxidation stripping on the intercalated graphite by utilizing oxygen generated by electrolyzing water displaced to interlamination, to obtain graphene oxide. The method has the following advantages: a product does not contain a metal impurity, the oxidation degree of graphene is controllable, the process is continuable and automatable, and the method is safe and has low emissions, etc.
Inventors:
PEI SONGFENG (CN)
REN WENCAI (CN)
CHENG HUIMING (CN)
REN WENCAI (CN)
CHENG HUIMING (CN)
Application Number:
PCT/CN2017/077610
Publication Date:
September 28, 2017
Filing Date:
March 22, 2017
Export Citation:
Assignee:
INST METAL RESEARCH CAS (CN)
International Classes:
C01B32/184
Foreign References:
| CN105271205A | 2016-01-27 | |||
| CN102544530A | 2012-07-04 | |||
| CN104261387A | 2015-01-07 | |||
| US8920614B2 | 2014-12-30 |
Other References:
See also references of EP 3434645A4
Attorney, Agent or Firm:
SHENYANG UPDATE INTELLECTUAL PROPERTY AGENCY (CN)
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