Addition of multiwalled carbon nanotube and graphene nanosheet in cobalt oxide film for enhancement of capacitance in electrochemical capacitors

T. Battumur; Swapnil B. Ambade; Rohan B. Ambade; Pashupati Pokharel; Dai Soo Lee; Sung Hwan Han; Wonjoo Lee; Soo Hyoung Lee

doi:10.1016/j.cap.2012.07.009

Addition of multiwalled carbon nanotube and graphene nanosheet in cobalt oxide film for enhancement of capacitance in electrochemical capacitors

T. Battumur
, Swapnil B. Ambade
, Rohan B. Ambade
, Pashupati Pokharel
, Dai Soo Lee
, Sung Hwan Han
, Wonjoo Lee^*
, Soo Hyoung Lee

^*Corresponding author for this work

Division of Chemical Engineering

Jeonbuk National University
Hanyang University
Samsung

Research output: Contribution to journal › Journal article › peer-review

42 Scopus citations

Abstract

In order to enhance the capacitance of electrochemical capacitors, multiwalled carbon nanotubes (MWCNTs) and graphene nanosheets (GNS) were added to cobalt oxide (Co ₃O ₄) paste. The composite film based on Co ₃O ₄/MWCNT/GNS (95:4:1 wt%) exhibited a capacitance of 294 F/g while the capacitance of Co ₃O ₄/MWCNT (95:5 wt%) and pure Co ₃O ₄ film is 205 and 163 F/g, respectively. The enhanced capacitance of Co ₃O ₄/MWCNT/GNS composite film was attributed to the electrochemical contributions of the Co ₃O ₄ nanoparticle attached to the GNS as well as their significantly increased specific surface areas by MWCNTs. Furthermore, the composite films showed faradaic redox capacitive behavior to double-layer capacitive behavior due to the different nanostructures of the composites.

Original language	English
Pages (from-to)	196-204
Number of pages	9
Journal	Current Applied Physics
Volume	13
Issue number	1
DOIs	https://doi.org/10.1016/j.cap.2012.07.009
State	Published - 2013.01

Keywords

Cobalt oxide
Electrochemical capacitor
Electrochemical impedance spectroscopy
Graphene nanosheets
Multiwalled carbon nanotubes

Quacquarelli Symonds(QS) Subject Topics

Materials Science
Physics & Astronomy

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10.1016/j.cap.2012.07.009

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@article{b5f3c0c85c7440059d4b57194bd375b1,

title = "Addition of multiwalled carbon nanotube and graphene nanosheet in cobalt oxide film for enhancement of capacitance in electrochemical capacitors",

abstract = "In order to enhance the capacitance of electrochemical capacitors, multiwalled carbon nanotubes (MWCNTs) and graphene nanosheets (GNS) were added to cobalt oxide (Co 3O 4) paste. The composite film based on Co 3O 4/MWCNT/GNS (95:4:1 wt\%) exhibited a capacitance of 294 F/g while the capacitance of Co 3O 4/MWCNT (95:5 wt\%) and pure Co 3O 4 film is 205 and 163 F/g, respectively. The enhanced capacitance of Co 3O 4/MWCNT/GNS composite film was attributed to the electrochemical contributions of the Co 3O 4 nanoparticle attached to the GNS as well as their significantly increased specific surface areas by MWCNTs. Furthermore, the composite films showed faradaic redox capacitive behavior to double-layer capacitive behavior due to the different nanostructures of the composites.",

keywords = "Cobalt oxide, Electrochemical capacitor, Electrochemical impedance spectroscopy, Graphene nanosheets, Multiwalled carbon nanotubes",

author = "T. Battumur and Ambade, \{Swapnil B.\} and Ambade, \{Rohan B.\} and Pashupati Pokharel and Lee, \{Dai Soo\} and Han, \{Sung Hwan\} and Wonjoo Lee and Lee, \{Soo Hyoung\}",

year = "2013",

month = jan,

doi = "10.1016/j.cap.2012.07.009",

language = "English",

volume = "13",

pages = "196--204",

journal = "Current Applied Physics",

issn = "1567-1739",

number = "1",

}

TY - JOUR

T1 - Addition of multiwalled carbon nanotube and graphene nanosheet in cobalt oxide film for enhancement of capacitance in electrochemical capacitors

AU - Battumur, T.

AU - Ambade, Swapnil B.

AU - Ambade, Rohan B.

AU - Pokharel, Pashupati

AU - Lee, Dai Soo

AU - Han, Sung Hwan

AU - Lee, Wonjoo

AU - Lee, Soo Hyoung

PY - 2013/1

Y1 - 2013/1

N2 - In order to enhance the capacitance of electrochemical capacitors, multiwalled carbon nanotubes (MWCNTs) and graphene nanosheets (GNS) were added to cobalt oxide (Co 3O 4) paste. The composite film based on Co 3O 4/MWCNT/GNS (95:4:1 wt%) exhibited a capacitance of 294 F/g while the capacitance of Co 3O 4/MWCNT (95:5 wt%) and pure Co 3O 4 film is 205 and 163 F/g, respectively. The enhanced capacitance of Co 3O 4/MWCNT/GNS composite film was attributed to the electrochemical contributions of the Co 3O 4 nanoparticle attached to the GNS as well as their significantly increased specific surface areas by MWCNTs. Furthermore, the composite films showed faradaic redox capacitive behavior to double-layer capacitive behavior due to the different nanostructures of the composites.

AB - In order to enhance the capacitance of electrochemical capacitors, multiwalled carbon nanotubes (MWCNTs) and graphene nanosheets (GNS) were added to cobalt oxide (Co 3O 4) paste. The composite film based on Co 3O 4/MWCNT/GNS (95:4:1 wt%) exhibited a capacitance of 294 F/g while the capacitance of Co 3O 4/MWCNT (95:5 wt%) and pure Co 3O 4 film is 205 and 163 F/g, respectively. The enhanced capacitance of Co 3O 4/MWCNT/GNS composite film was attributed to the electrochemical contributions of the Co 3O 4 nanoparticle attached to the GNS as well as their significantly increased specific surface areas by MWCNTs. Furthermore, the composite films showed faradaic redox capacitive behavior to double-layer capacitive behavior due to the different nanostructures of the composites.

KW - Cobalt oxide

KW - Electrochemical capacitor

KW - Electrochemical impedance spectroscopy

KW - Graphene nanosheets

KW - Multiwalled carbon nanotubes

UR - https://www.scopus.com/pages/publications/84866140952

U2 - 10.1016/j.cap.2012.07.009

DO - 10.1016/j.cap.2012.07.009

M3 - Journal article

AN - SCOPUS:84866140952

SN - 1567-1739

VL - 13

SP - 196

EP - 204

JO - Current Applied Physics

JF - Current Applied Physics

IS - 1

ER -

Addition of multiwalled carbon nanotube and graphene nanosheet in cobalt oxide film for enhancement of capacitance in electrochemical capacitors

Abstract

Keywords

Quacquarelli Symonds(QS) Subject Topics

Access to Document

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