Activated carbon/MnO2 composites as electrode for high performance supercapacitors

Jang Rak Choi; Ji Won Lee; Guijun Yang; Young Jung Heo; Soo Jin Park

doi:10.3390/catal10020256

Activated carbon/MnO₂ composites as electrode for high performance supercapacitors

Jang Rak Choi
, Ji Won Lee
, Guijun Yang
, Young Jung Heo
, Soo Jin Park

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

Abstract

Activated carbon (AC) was synthesized with various weight ratios of manganese dioxide (MO) through a simple hydrothermal approach. The electrochemical performance of the synthesized activated carbon/MnO₂ composites was investigated. The effect of the activated carbon/MnO₂ (AM) ratio on the electrochemical properties of the activated carbon/MnO₂ composites and the pore structure was also examined. The results show that the specific capacitance of the activated carbon material has been improved after the addition of MO. The as-synthesized composite material exhibits specific capacitance of 60.3 F g⁻¹ at 1 A g⁻¹, as well as stable cycle performance and 99.6% capacitance retention over 5000 cycles.

Original language	English
Article number	256
Journal	Catalysts
Volume	10
Issue number	2
DOIs	https://doi.org/10.3390/catal10020256
Publication status	Published - 1 Feb 2020
Externally published	Yes

Keywords

Activated carbon
Electrochemical performance
Manganese dioxide
Supercapacitor

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10.3390/catal10020256

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@article{249070315a6e4916bdbd6ed65f8027cc,

title = "Activated carbon/MnO2 composites as electrode for high performance supercapacitors",

abstract = "Activated carbon (AC) was synthesized with various weight ratios of manganese dioxide (MO) through a simple hydrothermal approach. The electrochemical performance of the synthesized activated carbon/MnO2 composites was investigated. The effect of the activated carbon/MnO2 (AM) ratio on the electrochemical properties of the activated carbon/MnO2 composites and the pore structure was also examined. The results show that the specific capacitance of the activated carbon material has been improved after the addition of MO. The as-synthesized composite material exhibits specific capacitance of 60.3 F g−1 at 1 A g−1, as well as stable cycle performance and 99.6\% capacitance retention over 5000 cycles.",

keywords = "Activated carbon, Electrochemical performance, Manganese dioxide, Supercapacitor",

author = "Choi, \{Jang Rak\} and Lee, \{Ji Won\} and Guijun Yang and Heo, \{Young Jung\} and Park, \{Soo Jin\}",

note = "Publisher Copyright: {\textcopyright} 2020 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2020",

month = feb,

day = "1",

doi = "10.3390/catal10020256",

language = "English",

volume = "10",

journal = "Catalysts",

issn = "2073-4344",

number = "2",

}

TY - JOUR

T1 - Activated carbon/MnO2 composites as electrode for high performance supercapacitors

AU - Choi, Jang Rak

AU - Lee, Ji Won

AU - Yang, Guijun

AU - Heo, Young Jung

AU - Park, Soo Jin

PY - 2020/2/1

Y1 - 2020/2/1

N2 - Activated carbon (AC) was synthesized with various weight ratios of manganese dioxide (MO) through a simple hydrothermal approach. The electrochemical performance of the synthesized activated carbon/MnO2 composites was investigated. The effect of the activated carbon/MnO2 (AM) ratio on the electrochemical properties of the activated carbon/MnO2 composites and the pore structure was also examined. The results show that the specific capacitance of the activated carbon material has been improved after the addition of MO. The as-synthesized composite material exhibits specific capacitance of 60.3 F g−1 at 1 A g−1, as well as stable cycle performance and 99.6% capacitance retention over 5000 cycles.

AB - Activated carbon (AC) was synthesized with various weight ratios of manganese dioxide (MO) through a simple hydrothermal approach. The electrochemical performance of the synthesized activated carbon/MnO2 composites was investigated. The effect of the activated carbon/MnO2 (AM) ratio on the electrochemical properties of the activated carbon/MnO2 composites and the pore structure was also examined. The results show that the specific capacitance of the activated carbon material has been improved after the addition of MO. The as-synthesized composite material exhibits specific capacitance of 60.3 F g−1 at 1 A g−1, as well as stable cycle performance and 99.6% capacitance retention over 5000 cycles.

KW - Activated carbon

KW - Electrochemical performance

KW - Manganese dioxide

KW - Supercapacitor

UR - https://www.scopus.com/pages/publications/85079713223

U2 - 10.3390/catal10020256

DO - 10.3390/catal10020256

M3 - Article

AN - SCOPUS:85079713223

SN - 2073-4344

VL - 10

JO - Catalysts

JF - Catalysts

IS - 2

M1 - 256

ER -

Activated carbon/MnO₂ composites as electrode for high performance supercapacitors

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Keywords

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