Asymmetric metal oxide pseudocapacitors advanced by three-dimensional nanoporous metal electrodes

L. Y. Chen; Y. Hou; J. L. Kang; A. Hirata; M. W. Chen

doi:10.1039/c4ta00965g

Asymmetric metal oxide pseudocapacitors advanced by three-dimensional nanoporous metal electrodes

L. Y. Chen, Y. Hou, J. L. Kang, A. Hirata, M. W. Chen

Advanced Institute for Materials Research (AIMR)

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

67 Citations (Scopus)

Abstract

We report a novel RuO₂-NPG//Co(OH)₂-NPG asymmetric supercapacitor with a high specific capacitance and a wide potential window in which bifunctional nanoporous gold is used as both the highly conductive supports of the pseudocapacitive oxides and the 3D current collectors in the device. The RuO₂-NPG and Co(OH)₂-NPG electrodes can reach specific capacitances of 1300 F g^-1 and 1800 F g^-1, respectively, which provide comparatively high specific capacitances in relation to metal oxide/carbon electrodes, giving rise to an asymmetric oxide pseudocapacitor with a large capacitance of ∼350 F g^-1, high working voltage of 1.6 V and an ultrahigh energy density of ∼120 W h kg ^-1.

Original language	English
Pages (from-to)	8448-8455
Number of pages	8
Journal	Journal of Materials Chemistry A
Volume	2
Issue number	22
DOIs	https://doi.org/10.1039/c4ta00965g
Publication status	Published - 2014 Jun 14

ASJC Scopus subject areas

Chemistry(all)
Renewable Energy, Sustainability and the Environment
Materials Science(all)

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

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10.1039/c4ta00965g

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title = "Asymmetric metal oxide pseudocapacitors advanced by three-dimensional nanoporous metal electrodes",

abstract = "We report a novel RuO2-NPG//Co(OH)2-NPG asymmetric supercapacitor with a high specific capacitance and a wide potential window in which bifunctional nanoporous gold is used as both the highly conductive supports of the pseudocapacitive oxides and the 3D current collectors in the device. The RuO2-NPG and Co(OH)2-NPG electrodes can reach specific capacitances of 1300 F g-1 and 1800 F g-1, respectively, which provide comparatively high specific capacitances in relation to metal oxide/carbon electrodes, giving rise to an asymmetric oxide pseudocapacitor with a large capacitance of ∼350 F g-1, high working voltage of 1.6 V and an ultrahigh energy density of ∼120 W h kg -1.",

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T1 - Asymmetric metal oxide pseudocapacitors advanced by three-dimensional nanoporous metal electrodes

AU - Chen, L. Y.

AU - Hou, Y.

AU - Kang, J. L.

AU - Hirata, A.

AU - Chen, M. W.

PY - 2014/6/14

Y1 - 2014/6/14

N2 - We report a novel RuO2-NPG//Co(OH)2-NPG asymmetric supercapacitor with a high specific capacitance and a wide potential window in which bifunctional nanoporous gold is used as both the highly conductive supports of the pseudocapacitive oxides and the 3D current collectors in the device. The RuO2-NPG and Co(OH)2-NPG electrodes can reach specific capacitances of 1300 F g-1 and 1800 F g-1, respectively, which provide comparatively high specific capacitances in relation to metal oxide/carbon electrodes, giving rise to an asymmetric oxide pseudocapacitor with a large capacitance of ∼350 F g-1, high working voltage of 1.6 V and an ultrahigh energy density of ∼120 W h kg -1.

AB - We report a novel RuO2-NPG//Co(OH)2-NPG asymmetric supercapacitor with a high specific capacitance and a wide potential window in which bifunctional nanoporous gold is used as both the highly conductive supports of the pseudocapacitive oxides and the 3D current collectors in the device. The RuO2-NPG and Co(OH)2-NPG electrodes can reach specific capacitances of 1300 F g-1 and 1800 F g-1, respectively, which provide comparatively high specific capacitances in relation to metal oxide/carbon electrodes, giving rise to an asymmetric oxide pseudocapacitor with a large capacitance of ∼350 F g-1, high working voltage of 1.6 V and an ultrahigh energy density of ∼120 W h kg -1.

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Asymmetric metal oxide pseudocapacitors advanced by three-dimensional nanoporous metal electrodes

Abstract

ASJC Scopus subject areas

UN SDGs

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