Symmetric supercapacitor based on partially exfoliated and reduced graphite oxide in neutral aqueous electrolyte

S. Shivakumara; Brij Kishore; Tirupathi Rao Penki; N. Munichandraiah

doi:10.1016/j.ssc.2014.08.014

Symmetric supercapacitor based on partially exfoliated and reduced graphite oxide in neutral aqueous electrolyte

S. Shivakumara
, Brij Kishore
, Tirupathi Rao Penki
, N. Munichandraiah

Indian Institute of Science Bangalore

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

47 Scopus citations

Abstract

The partially exfoliated and reduced graphite oxide (PE-RGO) is prepared by low temperature thermal exfoliation of graphite oxide under air atmosphere. A symmetric carbon/carbon supercapacitor is studied in a Na₂SO₄aqueous electrolyte. The discharge capacitance is 92 F g^-1, when symmetric cell is cycled between the potential ranges from 0 to 1.6 V. This system demonstrates a stable charge/discharge cycle behavior up to 3000 cycles when the cell is operated at a voltage window of 1.6 V. The utilization ratio of potential window is 90% for this system is attributed to the more negative value of electrodes potential when the cell voltage is set to 0 V. The low-temperature exfoliation approach is convenient for mass production of graphenes at low cost and it can be used as electrode material for energy storage applications.

Original language	English
Pages (from-to)	26-32
Number of pages	7
Journal	Solid State Communications
Volume	199
DOIs	https://doi.org/10.1016/j.ssc.2014.08.014
State	Published - Dec 2014
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2014 Elsevier Ltd.

Funding

SS and TRP acknowledge the financial support from the University Grant Commission (UGC) , Government of India , under Dr. D.S. Kothari post doctoral fellowship programme [Ref. no. F.4-2/2006(BSR)/13-626/2012(BSR) ] and senior research fellowship, respectively.

Funders	Funder number
University Grants Commission	F.4-2/2006(BSR)/13-626/2012(BSR)

Keywords

A. Exfoliated graphenes
B. Thermal exfoliation
C. High voltage supercapacitors
D. Symmetric capacitors

Access to Document

10.1016/j.ssc.2014.08.014

Cite this

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title = "Symmetric supercapacitor based on partially exfoliated and reduced graphite oxide in neutral aqueous electrolyte",

abstract = "The partially exfoliated and reduced graphite oxide (PE-RGO) is prepared by low temperature thermal exfoliation of graphite oxide under air atmosphere. A symmetric carbon/carbon supercapacitor is studied in a Na2SO4aqueous electrolyte. The discharge capacitance is 92 F g-1, when symmetric cell is cycled between the potential ranges from 0 to 1.6 V. This system demonstrates a stable charge/discharge cycle behavior up to 3000 cycles when the cell is operated at a voltage window of 1.6 V. The utilization ratio of potential window is 90\% for this system is attributed to the more negative value of electrodes potential when the cell voltage is set to 0 V. The low-temperature exfoliation approach is convenient for mass production of graphenes at low cost and it can be used as electrode material for energy storage applications.",

keywords = "A. Exfoliated graphenes, B. Thermal exfoliation, C. High voltage supercapacitors, D. Symmetric capacitors",

author = "S. Shivakumara and Brij Kishore and Penki, \{Tirupathi Rao\} and N. Munichandraiah",

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year = "2014",

month = dec,

doi = "10.1016/j.ssc.2014.08.014",

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T1 - Symmetric supercapacitor based on partially exfoliated and reduced graphite oxide in neutral aqueous electrolyte

AU - Shivakumara, S.

AU - Kishore, Brij

AU - Penki, Tirupathi Rao

AU - Munichandraiah, N.

PY - 2014/12

Y1 - 2014/12

N2 - The partially exfoliated and reduced graphite oxide (PE-RGO) is prepared by low temperature thermal exfoliation of graphite oxide under air atmosphere. A symmetric carbon/carbon supercapacitor is studied in a Na2SO4aqueous electrolyte. The discharge capacitance is 92 F g-1, when symmetric cell is cycled between the potential ranges from 0 to 1.6 V. This system demonstrates a stable charge/discharge cycle behavior up to 3000 cycles when the cell is operated at a voltage window of 1.6 V. The utilization ratio of potential window is 90% for this system is attributed to the more negative value of electrodes potential when the cell voltage is set to 0 V. The low-temperature exfoliation approach is convenient for mass production of graphenes at low cost and it can be used as electrode material for energy storage applications.

AB - The partially exfoliated and reduced graphite oxide (PE-RGO) is prepared by low temperature thermal exfoliation of graphite oxide under air atmosphere. A symmetric carbon/carbon supercapacitor is studied in a Na2SO4aqueous electrolyte. The discharge capacitance is 92 F g-1, when symmetric cell is cycled between the potential ranges from 0 to 1.6 V. This system demonstrates a stable charge/discharge cycle behavior up to 3000 cycles when the cell is operated at a voltage window of 1.6 V. The utilization ratio of potential window is 90% for this system is attributed to the more negative value of electrodes potential when the cell voltage is set to 0 V. The low-temperature exfoliation approach is convenient for mass production of graphenes at low cost and it can be used as electrode material for energy storage applications.

KW - A. Exfoliated graphenes

KW - B. Thermal exfoliation

KW - C. High voltage supercapacitors

KW - D. Symmetric capacitors

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DO - 10.1016/j.ssc.2014.08.014

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AN - SCOPUS:84907187309

SN - 0038-1098

VL - 199

SP - 26

EP - 32

JO - Solid State Communications

JF - Solid State Communications

ER -

Symmetric supercapacitor based on partially exfoliated and reduced graphite oxide in neutral aqueous electrolyte

Abstract

Bibliographical note

Funding

Keywords

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