Issue 23, 2012
From the journal:

RSC Advances

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

TaeYoung Kim,a   Hyun Chang Kang,b   Tran Thanh Tung,c   Jung Don Lee,b   Hyeongkeun Kim,a   Woo Seok Yang,a   Ho Gyu Yoon*b  and  Kwang S. Suh*b  

* Corresponding authors

a Electronic Materials & Device Research Center, Korea Electronics Technology Institute, Seongnam 463-816, Korea

b Department of Materials Science and Engineering, Korea University, 5-1 Anam-dong, Seongbuk-gu, Seoul 136-713, Korea
E-mail: hgyoon@korea.ac.kr, suhkwang@korea.ac.kr
Fax: 82 2 929 4408
Tel: 82 2 927 4546

c Smart Plastics Group, European University of Brittany, LIMATB-UBS, Lorient, France

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).

Graphical abstract: Ionic liquid-assisted microwave reduction of graphite oxide for supercapacitors

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Article information

DOI
https://doi.org/10.1039/C2RA21400H
Article type
Paper
Submitted
09 Jul 2012
Accepted
09 Jul 2012
First published
16 Aug 2012

RSC Adv., 2012,2, 8808-8812

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Ionic liquid-assisted microwave reduction of graphite oxide for supercapacitors

T. Kim, H. Chang Kang, T. Thanh Tung, J. Don Lee, H. Kim, W. Seok Yang, H. Gyu Yoon and K. S. Suh, RSC Adv., 2012, 2, 8808 DOI: 10.1039/C2RA21400H

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