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

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29 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 languageEnglish
Pages (from-to)8808-8812
Number of pages5
JournalRSC Advances
Volume2
Issue number23
DOIs
Publication statusPublished - 2012

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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    Kim, T. Y., Chang Kang, H., Thanh Tung, T., Don Lee, J., Kim, H., Seok Yang, W., Gyu Yoon, H., & Suh, K. S. (2012). Ionic liquid-assisted microwave reduction of graphite oxide for supercapacitors. RSC Advances, 2(23), 8808-8812. https://doi.org/10.1039/c2ra21400h