Ionic liquid-assisted microwave reduction of graphite oxide for supercapacitors

Tae Young Kim; Hyun Chang Kang; Tran Thanh Tung; Jung Don Lee; Hyeongkeun Kim; Woo Seok Yang; Ho Gyu Yoon; Kwang S. Suh

doi:10.1039/c2ra21400h

Ionic liquid-assisted microwave reduction of graphite oxide for supercapacitors

Tae Young Kim, Hyun Chang Kang, Tran Thanh Tung, Jung Don Lee, Hyeongkeun Kim, Woo Seok Yang, Ho Gyu Yoon, Kwang S. Suh

Department of Materials Science and Engineering

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

35 Citations (Scopus)

Abstract

We present a facile and scalable method for the rapid production of reduced graphene oxide (RG-O) by ionic liquid-assisted microwave chemistry. Microwave irradiation of graphite oxide (GO) in an ionic liquid (IL) enables the rapid reduction of GO within 15 s, producing RG-O containing the IL within their porous structures. The reduced graphene oxide prepared by IL-assisted microwave irradiation (mRG-O) electrodes exhibited a high specific capacitance of ∼135 F g^-1, which can be attributed to the open architecture of the mRG-O filled with IL moieties. A supercapacitor made with mRG-O in an IL electrolyte operated at a voltage of 3.5 V and showed a high energy density (∼58 W h kg^-1) and power density (∼246 kW kg^-1).

Original language	English
Pages (from-to)	8808-8812
Number of pages	5
Journal	RSC Advances
Volume	2
Issue number	23
DOIs	https://doi.org/10.1039/c2ra21400h
Publication status	Published - 2012

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

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10.1039/c2ra21400h

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title = "Ionic liquid-assisted microwave reduction of graphite oxide for supercapacitors",

abstract = "We present a facile and scalable method for the rapid production of reduced graphene oxide (RG-O) by ionic liquid-assisted microwave chemistry. Microwave irradiation of graphite oxide (GO) in an ionic liquid (IL) enables the rapid reduction of GO within 15 s, producing RG-O containing the IL within their porous structures. The reduced graphene oxide prepared by IL-assisted microwave irradiation (mRG-O) electrodes exhibited a high specific capacitance of ∼135 F g-1, which can be attributed to the open architecture of the mRG-O filled with IL moieties. A supercapacitor made with mRG-O in an IL electrolyte operated at a voltage of 3.5 V and showed a high energy density (∼58 W h kg-1) and power density (∼246 kW kg-1).",

author = "Kim, {Tae Young} and {Chang Kang}, Hyun and {Thanh Tung}, Tran and {Don Lee}, Jung and Hyeongkeun Kim and {Seok Yang}, Woo and {Gyu Yoon}, Ho and Suh, {Kwang S.}",

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year = "2012",

doi = "10.1039/c2ra21400h",

language = "English",

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pages = "8808--8812",

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T1 - Ionic liquid-assisted microwave reduction of graphite oxide for supercapacitors

AU - Kim, Tae Young

AU - Chang Kang, Hyun

AU - Thanh Tung, Tran

AU - Don Lee, Jung

AU - Kim, Hyeongkeun

AU - Seok Yang, Woo

AU - Gyu Yoon, Ho

AU - Suh, Kwang S.

PY - 2012

Y1 - 2012

N2 - We present a facile and scalable method for the rapid production of reduced graphene oxide (RG-O) by ionic liquid-assisted microwave chemistry. Microwave irradiation of graphite oxide (GO) in an ionic liquid (IL) enables the rapid reduction of GO within 15 s, producing RG-O containing the IL within their porous structures. The reduced graphene oxide prepared by IL-assisted microwave irradiation (mRG-O) electrodes exhibited a high specific capacitance of ∼135 F g-1, which can be attributed to the open architecture of the mRG-O filled with IL moieties. A supercapacitor made with mRG-O in an IL electrolyte operated at a voltage of 3.5 V and showed a high energy density (∼58 W h kg-1) and power density (∼246 kW kg-1).

AB - We present a facile and scalable method for the rapid production of reduced graphene oxide (RG-O) by ionic liquid-assisted microwave chemistry. Microwave irradiation of graphite oxide (GO) in an ionic liquid (IL) enables the rapid reduction of GO within 15 s, producing RG-O containing the IL within their porous structures. The reduced graphene oxide prepared by IL-assisted microwave irradiation (mRG-O) electrodes exhibited a high specific capacitance of ∼135 F g-1, which can be attributed to the open architecture of the mRG-O filled with IL moieties. A supercapacitor made with mRG-O in an IL electrolyte operated at a voltage of 3.5 V and showed a high energy density (∼58 W h kg-1) and power density (∼246 kW kg-1).

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DO - 10.1039/c2ra21400h

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JF - RSC Advances

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Ionic liquid-assisted microwave reduction of graphite oxide for supercapacitors

Abstract

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