Process for producing nano-scaled graphene platelet nanocomposite electrodes for supercapacitors
First Claim
1. A process for producing meso-porous nanocomposite supercapacitor electrode comprising nano-scaled graphene platelets, said process comprising:
- (A) Providing nano-scaled graphene platelets, wherein each of the platelets comprises a single graphene sheet or a stack of multiple graphene sheets, and the platelets have an average thickness no greater than 100 nm;
(B) Combining a binder material, said graphene platelets, and a liquid to form a dispersion;
(C) Forming said dispersion into a desired shape and removing said liquid to produce a binder-platelet mixture; and
(D) Treating said binder material under a desired temperature or radiation environment to convert said binder-platelet mixture into said meso-porous nanocomposite electrode, wherein said platelets are bonded by said binder and said electrode has electrolyte-accessible pores characterized in that said nanocomposite has a surface area greater than about 100 m2/gm.
5 Assignments
0 Petitions
Accused Products
Abstract
A process for producing meso-porous nanocomposite electrode comprising nano-scaled graphene platelets. The process comprises: (A) providing nano-scaled graphene platelets, wherein each of the platelets comprises a single graphene sheet or a stack of multiple graphene sheets, and the platelets have an average thickness no greater than 100 nm (preferably less than 5 nm and most preferably less than 2 nm in thickness); (B) combining a binder material, the graphene platelets, and a liquid to form a dispersion; (C) forming the dispersion into a desired shape and removing the liquid to produce a binder-platelet mixture; and (D) treating the binder material under a desired temperature or radiation environment to convert the binder-platelet mixture into a meso-porous nanocomposite electrode, wherein the platelets are bonded by the binder and the electrode has electrolyte-accessible pores characterized in that the nanocomposite has a surface area greater than about 100 m2/gm (preferably greater than 200 m2/gm, more preferably greater than 500 100 m2/gm, and most preferably greater than 1,000 m2/gm). A supercapacitor featuring such a nanocomposite exhibits an exceptionally high capacitance value.
-
Citations
40 Claims
-
1. A process for producing meso-porous nanocomposite supercapacitor electrode comprising nano-scaled graphene platelets, said process comprising:
-
(A) Providing nano-scaled graphene platelets, wherein each of the platelets comprises a single graphene sheet or a stack of multiple graphene sheets, and the platelets have an average thickness no greater than 100 nm; (B) Combining a binder material, said graphene platelets, and a liquid to form a dispersion; (C) Forming said dispersion into a desired shape and removing said liquid to produce a binder-platelet mixture; and (D) Treating said binder material under a desired temperature or radiation environment to convert said binder-platelet mixture into said meso-porous nanocomposite electrode, wherein said platelets are bonded by said binder and said electrode has electrolyte-accessible pores characterized in that said nanocomposite has a surface area greater than about 100 m2/gm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A process for producing meso-porous nanocomposite supercapacitor electrode comprising nano-scaled graphene platelets, said process comprising:
-
(A) Providing nano-scaled graphene platelets, wherein each of the platelets comprises a single graphene sheet or a stack of multiple graphene sheets, and the platelets have an average thickness no greater than 100 nm; (B) Combining a binder material in a liquid form and said graphene platelets to form a dispersion; (C) Forming said dispersion into a desired shape; and (D) Treating said binder material under a desired temperature or radiation environment to produce said meso-porous nanocomposite electrode, wherein said platelets are bonded by said binder and said electrode has electrolyte-accessible pores characterized in that said nanocomposite has a surface area greater than about 100 m2/gm. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
-
-
29. A process of continuously producing a supercapacitor electrode, said process comprising:
-
(A) Continuously providing a dispersion comprising a binder material, a liquid medium, and nano-scaled graphene platelets, wherein each of the platelets comprises a single graphene sheet or a stack of multiple graphene sheets, and the platelets have an average thickness no greater than 100 nm; (B) Continuously forming said dispersion into a desired shape and removing said liquid to produce a binder-platelet mixture; and (C) Continuously treating said binder material under a desired temperature or radiation environment to convert said binder-platelet mixture into said meso-porous nanocomposite electrode, wherein said platelets are bonded by said binder and said electrode has electrolyte-accessible pores characterized in that said nanocomposite has a surface area greater than about 100 m2/gm. - View Dependent Claims (30, 31, 32, 33, 34)
-
-
35. A process of continuously producing a supercapacitor electrode, said process comprising:
-
(A) Continuously providing a dispersion comprising a binder material initially in a liquid form and nano-scaled graphene platelets suspended in said binder liquid, wherein each of the platelets comprises a single graphene sheet or a stack of multiple graphene sheets, and the platelets have an average thickness no greater than 100 nm; (B) Continuously forming said dispersion into a desired shape; and (C) Continuously treating said binder material under a desired temperature or radiation environment to produce said meso-porous nanocomposite electrode, wherein said platelets are bonded by said binder and said electrode has electrolyte-accessible pores characterized in that said nanocomposite has a surface area greater than about 100 m2/gm. - View Dependent Claims (36, 37, 38, 39, 40)
-
Specification