Spacer-modified nano graphene electrodes for supercapacitors
AssigneeNanotek Instruments, Inc.
InventorsAruna Zhamu, Zenning Yu, Chen-guang Liu, Bor Z. Jang
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Abstract
A surface-modified nano graphene platelet (NGP), comprising: (a) a nano graphene platelet having a thickness smaller than 10 nm; and (b) discrete, non-continuous, and non-metallic bumps or nodules bonded to a surface of the graphene platelet to serve as a spacer. When multiple surface-modified NGP sheets are stacked together to form an electrode, large numbers of electrolyte-accessible pores are formed, enabling the formation of large amounts of double layer charges in a supercapacitor, which exhibits an exceptionally high specific capacitance.
Claims25
A spacer-modified nano graphene platelet or sheet, comprising:
- (a) a nano graphene platelet or sheet having a thickness smaller than 10 nm, said graphene platelet or sheet having two opposed surfaces;
- and
- (b) discrete, non-continuous, and non-metallic bumps or nodules bonded to a surface of said graphene platelet or sheet to serve as a spacer that prevents re-stacking of said graphene platelet or sheet with another graphene platelet or sheet.
Dependencies are inferred from the claim text.