Graphene-Based ultracapacitors

Meryl D. Stoller; Sungjin Park; Zhu Yanwu; Jinho An; Rodney S. Ruoff

doi:10.1021/nl802558y

Graphene-Based ultracapacitors

Meryl D. Stoller, Sungjin Park, Zhu Yanwu, Jinho An, Rodney S. Ruoff

University of Texas at Austin

Research output: Contribution to journal › Article › peer-review

8003 Scopus citations

Abstract

The surface area of a single graphene sheet is 2630 m²/g, substantially higher than values derived from BET surface area measurements of activated carbons used in current electrochemical double layer capacitors. Our group has pioneered a new carbon material that we call chemically modified graphene (CMG). CMG materials are made from 1-atom thick sheets of carbon, functionalized as needed, and here we demonstrate in an ultracapacitor cell their performance. Specific capacitances of 135 and 99 F/g in aqueous and organic electrolytes, respectively, have been measured. In addition, high electrical conductivity gives these materials consistently good performance over a wide range of voltage scan rates. These encouraging results illustrate the exciting potential for high performance, electrical energy storage devices based on this new class of carbon material.

Original language	English
Pages (from-to)	3498-3502
Number of pages	5
Journal	Nano Letters
Volume	8
Issue number	10
DOIs	https://doi.org/10.1021/nl802558y
State	Published - Oct 2008
Externally published	Yes

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10.1021/nl802558y

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title = "Graphene-Based ultracapacitors",

abstract = "The surface area of a single graphene sheet is 2630 m2/g, substantially higher than values derived from BET surface area measurements of activated carbons used in current electrochemical double layer capacitors. Our group has pioneered a new carbon material that we call chemically modified graphene (CMG). CMG materials are made from 1-atom thick sheets of carbon, functionalized as needed, and here we demonstrate in an ultracapacitor cell their performance. Specific capacitances of 135 and 99 F/g in aqueous and organic electrolytes, respectively, have been measured. In addition, high electrical conductivity gives these materials consistently good performance over a wide range of voltage scan rates. These encouraging results illustrate the exciting potential for high performance, electrical energy storage devices based on this new class of carbon material.",

author = "Stoller, {Meryl D.} and Sungjin Park and Zhu Yanwu and Jinho An and Ruoff, {Rodney S.}",

year = "2008",

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doi = "10.1021/nl802558y",

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AU - Park, Sungjin

AU - Yanwu, Zhu

AU - An, Jinho

AU - Ruoff, Rodney S.

PY - 2008/10

Y1 - 2008/10

N2 - The surface area of a single graphene sheet is 2630 m2/g, substantially higher than values derived from BET surface area measurements of activated carbons used in current electrochemical double layer capacitors. Our group has pioneered a new carbon material that we call chemically modified graphene (CMG). CMG materials are made from 1-atom thick sheets of carbon, functionalized as needed, and here we demonstrate in an ultracapacitor cell their performance. Specific capacitances of 135 and 99 F/g in aqueous and organic electrolytes, respectively, have been measured. In addition, high electrical conductivity gives these materials consistently good performance over a wide range of voltage scan rates. These encouraging results illustrate the exciting potential for high performance, electrical energy storage devices based on this new class of carbon material.

AB - The surface area of a single graphene sheet is 2630 m2/g, substantially higher than values derived from BET surface area measurements of activated carbons used in current electrochemical double layer capacitors. Our group has pioneered a new carbon material that we call chemically modified graphene (CMG). CMG materials are made from 1-atom thick sheets of carbon, functionalized as needed, and here we demonstrate in an ultracapacitor cell their performance. Specific capacitances of 135 and 99 F/g in aqueous and organic electrolytes, respectively, have been measured. In addition, high electrical conductivity gives these materials consistently good performance over a wide range of voltage scan rates. These encouraging results illustrate the exciting potential for high performance, electrical energy storage devices based on this new class of carbon material.

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JO - Nano Letters

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ER -

Graphene-Based ultracapacitors

Abstract

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