Nanostructured ternary electrodes for energy-storage applications

Rakhi Raghavan Baby; Wei Chen; Dong Kyu Cha; Husam N. Alshareef

doi:10.1002/aenm.201100609

Nanostructured ternary electrodes for energy-storage applications

Rakhi Raghavan Baby, Wei Chen, Dong Kyu Cha, Husam N. Alshareef

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

173 Scopus citations

Abstract

A three-component, flexible electrode is developed for supercapacitors over graphitized carbon fabric, utilizing γ-MnO 2 nanoflowers anchored onto carbon nanotubes (γ-MnO 2/CNT) as spacers for graphene nanosheets (GNs). The three-component, composite electrode doubles the specific capacitance with respect to GN-only electrodes, giving the highest-reported specific capacitance (308 F g -1) for symmetric supercapacitors containing MnO 2 and GNs using a two-electrode configuration, at a scan rate of 20 mV s -1. A maximum energy density of 43 W h kg -1 is obtained for our symmetric supercapacitors at a constant discharge-current density of 2.5 A g -1 using GN-(γ-MnO 2/CNT)-nanocomposite electrodes. The fabricated supercapacitor device exhibits an excellent cycle life by retaining ≈90% of the initial specific capacitance after 5000 cycles. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Original language	English (US)
Pages (from-to)	381-389
Number of pages	9
Journal	Advanced Energy Materials
Volume	2
Issue number	3
DOIs	https://doi.org/10.1002/aenm.201100609
State	Published - Feb 13 2012

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
General Materials Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/aenm.201100609

Cite this

@article{b21dd42604d047f7b953aed93ad09245,

title = "Nanostructured ternary electrodes for energy-storage applications",

abstract = "A three-component, flexible electrode is developed for supercapacitors over graphitized carbon fabric, utilizing γ-MnO 2 nanoflowers anchored onto carbon nanotubes (γ-MnO 2/CNT) as spacers for graphene nanosheets (GNs). The three-component, composite electrode doubles the specific capacitance with respect to GN-only electrodes, giving the highest-reported specific capacitance (308 F g -1) for symmetric supercapacitors containing MnO 2 and GNs using a two-electrode configuration, at a scan rate of 20 mV s -1. A maximum energy density of 43 W h kg -1 is obtained for our symmetric supercapacitors at a constant discharge-current density of 2.5 A g -1 using GN-(γ-MnO 2/CNT)-nanocomposite electrodes. The fabricated supercapacitor device exhibits an excellent cycle life by retaining ≈90% of the initial specific capacitance after 5000 cycles. {\textcopyright} 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.",

author = "Baby, {Rakhi Raghavan} and Wei Chen and Cha, {Dong Kyu} and Alshareef, {Husam N.}",

note = "KAUST Repository Item: Exported on 2020-10-01",

year = "2012",

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doi = "10.1002/aenm.201100609",

language = "English (US)",

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T1 - Nanostructured ternary electrodes for energy-storage applications

AU - Baby, Rakhi Raghavan

AU - Chen, Wei

AU - Cha, Dong Kyu

AU - Alshareef, Husam N.

N1 - KAUST Repository Item: Exported on 2020-10-01

PY - 2012/2/13

Y1 - 2012/2/13

N2 - A three-component, flexible electrode is developed for supercapacitors over graphitized carbon fabric, utilizing γ-MnO 2 nanoflowers anchored onto carbon nanotubes (γ-MnO 2/CNT) as spacers for graphene nanosheets (GNs). The three-component, composite electrode doubles the specific capacitance with respect to GN-only electrodes, giving the highest-reported specific capacitance (308 F g -1) for symmetric supercapacitors containing MnO 2 and GNs using a two-electrode configuration, at a scan rate of 20 mV s -1. A maximum energy density of 43 W h kg -1 is obtained for our symmetric supercapacitors at a constant discharge-current density of 2.5 A g -1 using GN-(γ-MnO 2/CNT)-nanocomposite electrodes. The fabricated supercapacitor device exhibits an excellent cycle life by retaining ≈90% of the initial specific capacitance after 5000 cycles. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

AB - A three-component, flexible electrode is developed for supercapacitors over graphitized carbon fabric, utilizing γ-MnO 2 nanoflowers anchored onto carbon nanotubes (γ-MnO 2/CNT) as spacers for graphene nanosheets (GNs). The three-component, composite electrode doubles the specific capacitance with respect to GN-only electrodes, giving the highest-reported specific capacitance (308 F g -1) for symmetric supercapacitors containing MnO 2 and GNs using a two-electrode configuration, at a scan rate of 20 mV s -1. A maximum energy density of 43 W h kg -1 is obtained for our symmetric supercapacitors at a constant discharge-current density of 2.5 A g -1 using GN-(γ-MnO 2/CNT)-nanocomposite electrodes. The fabricated supercapacitor device exhibits an excellent cycle life by retaining ≈90% of the initial specific capacitance after 5000 cycles. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

UR - http://hdl.handle.net/10754/562095

UR - http://doi.wiley.com/10.1002/aenm.201100609

UR - http://www.scopus.com/inward/record.url?scp=84863696671&partnerID=8YFLogxK

U2 - 10.1002/aenm.201100609

DO - 10.1002/aenm.201100609

M3 - Article

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EP - 389

JO - Advanced Energy Materials

JF - Advanced Energy Materials

IS - 3

ER -

Nanostructured ternary electrodes for energy-storage applications

Abstract

Bibliographical note

ASJC Scopus subject areas

UN SDGs

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