Water dispersible graphene nanosheet
AssigneeMexplorer. Co., Ltd.
InventorsSung Oong Kang, Si Woo Park, Byung Kwon Jang
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Abstract
A graphene nanosheet and a manufacturing method therefor and, more particularly, to a water-dispersible graphene nanosheet and a manufacturing method therefor. The water-dispersible graphene nanosheet of the present invention is characterized in that at least a part of the end portion of a basal plane is sulfated.
Claims14
A water-dispersible graphene nanosheet in which at least a part of the edge of a basal plane of a carbon layer is sulfated to comprise a carbon-sulfate bond of C—O—SO3H or C—O—SO3.
A method for manufacturing a water-dispersible graphene nanosheet comprising the steps of dipping at least a part of a positive electrode of a graphite material and a negative electrode of a metal material into a mixed electrolyte aqueous solution containing a persulfate salt, which contains persulfate ion (S2O22−);
- a basic salt;
- and a buffer, and inducing sulfation in the end portion of the graphene nanosheet derived from graphite by an electrochemical reaction,
- wherein the pH is maintained at 8 to 13 during an electrochemical reaction in the mixed electrolyte aqueous solution.
Dependencies are inferred from the claim text.