Aqueous-based chemical route toward ambient preparation of multicomponent core-shell nanotubes

Hui Teng Tan; Xianhong Rui; Hong Yu; Weiling Liu; Chen Xu; Zhichuan Xu; Huey Hoon Hng; Qingyu Yan

doi:10.1021/nn500942k

Aqueous-based chemical route toward ambient preparation of multicomponent core-shell nanotubes

Hui Teng Tan, Xianhong Rui, Hong Yu, Weiling Liu, Chen Xu, Zhichuan Xu, Huey Hoon Hng, Qingyu Yan^*

^*Corresponding author for this work

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

40 Citations (Scopus)

Abstract

Room-temperature synthesized V₂O₅@MnO₂ core-shell nanotubes with tunable tunnel dimensions via a facile aqueous-based method are presented. The rational-designed tubular morphology endows them with good permeability of electrolyte ions for maximum utilization of the electroactive sites, while the epitaxial-grown MnO₂ imposes mechanical support to V₂O₅ against structural collapse upon long-term cycling. Hence, specific capacitance as high as 694 F g ^-1 is achieved at 1 A g^-1 accompanied by excellent cycling stability (preserved 92% of its initial specific capacitance after 5000 cycles). In addition, functionalization of the V₂O ₅@MnO₂ nanotubes with other transition metal oxides results in ternary composites, V₂O₅@MnO₂/M nanotubes (M = Fe₂O₃, Co₂O₃/Co(OH) ₂, Ni(OH)₂). The versatility of this synthetic protocol provides a platform to fabricate complex ternary nanocomposites in a more benign way.

Original language	English
Pages (from-to)	4004-4014
Number of pages	11
Journal	ACS Nano
Volume	8
Issue number	4
DOIs	https://doi.org/10.1021/nn500942k
Publication status	Published - Apr 22 2014
Externally published	Yes

ASJC Scopus Subject Areas

General Materials Science
General Engineering
General Physics and Astronomy

Keywords

core-shell architecture
multicomponents
nanotubes
supercapacitor electrode
synergistic effect

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10.1021/nn500942k

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title = "Aqueous-based chemical route toward ambient preparation of multicomponent core-shell nanotubes",

abstract = "Room-temperature synthesized V2O5@MnO2 core-shell nanotubes with tunable tunnel dimensions via a facile aqueous-based method are presented. The rational-designed tubular morphology endows them with good permeability of electrolyte ions for maximum utilization of the electroactive sites, while the epitaxial-grown MnO2 imposes mechanical support to V2O5 against structural collapse upon long-term cycling. Hence, specific capacitance as high as 694 F g -1 is achieved at 1 A g-1 accompanied by excellent cycling stability (preserved 92% of its initial specific capacitance after 5000 cycles). In addition, functionalization of the V2O 5@MnO2 nanotubes with other transition metal oxides results in ternary composites, V2O5@MnO2/M nanotubes (M = Fe2O3, Co2O3/Co(OH) 2, Ni(OH)2). The versatility of this synthetic protocol provides a platform to fabricate complex ternary nanocomposites in a more benign way.",

keywords = "core-shell architecture, multicomponents, nanotubes, supercapacitor electrode, synergistic effect",

author = "Tan, {Hui Teng} and Xianhong Rui and Hong Yu and Weiling Liu and Chen Xu and Zhichuan Xu and Hng, {Huey Hoon} and Qingyu Yan",

year = "2014",

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doi = "10.1021/nn500942k",

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T1 - Aqueous-based chemical route toward ambient preparation of multicomponent core-shell nanotubes

AU - Tan, Hui Teng

AU - Rui, Xianhong

AU - Yu, Hong

AU - Liu, Weiling

AU - Xu, Chen

AU - Xu, Zhichuan

AU - Hng, Huey Hoon

AU - Yan, Qingyu

PY - 2014/4/22

Y1 - 2014/4/22

N2 - Room-temperature synthesized V2O5@MnO2 core-shell nanotubes with tunable tunnel dimensions via a facile aqueous-based method are presented. The rational-designed tubular morphology endows them with good permeability of electrolyte ions for maximum utilization of the electroactive sites, while the epitaxial-grown MnO2 imposes mechanical support to V2O5 against structural collapse upon long-term cycling. Hence, specific capacitance as high as 694 F g -1 is achieved at 1 A g-1 accompanied by excellent cycling stability (preserved 92% of its initial specific capacitance after 5000 cycles). In addition, functionalization of the V2O 5@MnO2 nanotubes with other transition metal oxides results in ternary composites, V2O5@MnO2/M nanotubes (M = Fe2O3, Co2O3/Co(OH) 2, Ni(OH)2). The versatility of this synthetic protocol provides a platform to fabricate complex ternary nanocomposites in a more benign way.

AB - Room-temperature synthesized V2O5@MnO2 core-shell nanotubes with tunable tunnel dimensions via a facile aqueous-based method are presented. The rational-designed tubular morphology endows them with good permeability of electrolyte ions for maximum utilization of the electroactive sites, while the epitaxial-grown MnO2 imposes mechanical support to V2O5 against structural collapse upon long-term cycling. Hence, specific capacitance as high as 694 F g -1 is achieved at 1 A g-1 accompanied by excellent cycling stability (preserved 92% of its initial specific capacitance after 5000 cycles). In addition, functionalization of the V2O 5@MnO2 nanotubes with other transition metal oxides results in ternary composites, V2O5@MnO2/M nanotubes (M = Fe2O3, Co2O3/Co(OH) 2, Ni(OH)2). The versatility of this synthetic protocol provides a platform to fabricate complex ternary nanocomposites in a more benign way.

KW - core-shell architecture

KW - multicomponents

KW - nanotubes

KW - supercapacitor electrode

KW - synergistic effect

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Aqueous-based chemical route toward ambient preparation of multicomponent core-shell nanotubes

Abstract

ASJC Scopus Subject Areas

Keywords

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