Fabrication of WO3/TiO2 core-shell nanowire arrays: Structure design and high electrochromic performance

Kai Tang; Yong Zhang; Yingdi Shi; Jiewu Cui; Xia Shu; Yan Wang; Yongqiang Qin; Jiaqin Liu; Hark Hoe Tan; Yucheng Wu

doi:10.1016/j.electacta.2019.135189

Fabrication of WO₃/TiO₂ core-shell nanowire arrays: Structure design and high electrochromic performance

Kai Tang, Yong Zhang^*, Yingdi Shi, Jiewu Cui, Xia Shu, Yan Wang, Yongqiang Qin, Jiaqin Liu, Hark Hoe Tan, Yucheng Wu

^*Corresponding author for this work

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

53 Citations (Scopus)

Abstract

Unique WO₃/TiO₂ core-shell nanowire heterostructures are rationally constructed based on a solvothermal method combining magnetron sputtering. High resolution transmission electron microscopy (HRTEM) analysis evidences the existence of a semi-coherent interface between a hexagonal phase WO₃ core and anatase TiO₂ shell. X-ray photoelectron spectroscopy and optical absorption spectra suggest an interfacial interaction between the WO₃ core and TiO₂ shell. The WO₃/TiO₂ core-shell nanowires exhibit superior electrochromic performance in both visible and near infrared regions with large optical modulation (87.0% at 1500 nm and 85.3% at 633 nm), short bleaching–coloration times (1.1 s and 3.0 s), decent coloring efficiency (102.1 cm² C⁻¹) and excellent cycling stability (95.6% after 3000 cycles). The obtained WO₃/TiO₂ core-shell nanowire heterostructures may find great potential in producing electrochromic nanodevices and other energy-efficient applications.

Original language	English
Article number	135189
Journal	Electrochimica Acta
Volume	330
DOIs	https://doi.org/10.1016/j.electacta.2019.135189
Publication status	Published - 10 Jan 2020

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title = "Fabrication of WO3/TiO2 core-shell nanowire arrays: Structure design and high electrochromic performance",

abstract = "Unique WO3/TiO2 core-shell nanowire heterostructures are rationally constructed based on a solvothermal method combining magnetron sputtering. High resolution transmission electron microscopy (HRTEM) analysis evidences the existence of a semi-coherent interface between a hexagonal phase WO3 core and anatase TiO2 shell. X-ray photoelectron spectroscopy and optical absorption spectra suggest an interfacial interaction between the WO3 core and TiO2 shell. The WO3/TiO2 core-shell nanowires exhibit superior electrochromic performance in both visible and near infrared regions with large optical modulation (87.0% at 1500 nm and 85.3% at 633 nm), short bleaching–coloration times (1.1 s and 3.0 s), decent coloring efficiency (102.1 cm2 C−1) and excellent cycling stability (95.6% after 3000 cycles). The obtained WO3/TiO2 core-shell nanowire heterostructures may find great potential in producing electrochromic nanodevices and other energy-efficient applications.",

keywords = "Core/shell nanowires, Electrochromic, Magnetron sputtering, Titanium oxide, Tungsten oxide",

author = "Kai Tang and Yong Zhang and Yingdi Shi and Jiewu Cui and Xia Shu and Yan Wang and Yongqiang Qin and Jiaqin Liu and Tan, {Hark Hoe} and Yucheng Wu",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2020",

month = jan,

day = "10",

doi = "10.1016/j.electacta.2019.135189",

language = "English",

volume = "330",

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T1 - Fabrication of WO3/TiO2 core-shell nanowire arrays

T2 - Structure design and high electrochromic performance

AU - Tang, Kai

AU - Zhang, Yong

AU - Shi, Yingdi

AU - Cui, Jiewu

AU - Shu, Xia

AU - Wang, Yan

AU - Qin, Yongqiang

AU - Liu, Jiaqin

AU - Tan, Hark Hoe

AU - Wu, Yucheng

PY - 2020/1/10

Y1 - 2020/1/10

N2 - Unique WO3/TiO2 core-shell nanowire heterostructures are rationally constructed based on a solvothermal method combining magnetron sputtering. High resolution transmission electron microscopy (HRTEM) analysis evidences the existence of a semi-coherent interface between a hexagonal phase WO3 core and anatase TiO2 shell. X-ray photoelectron spectroscopy and optical absorption spectra suggest an interfacial interaction between the WO3 core and TiO2 shell. The WO3/TiO2 core-shell nanowires exhibit superior electrochromic performance in both visible and near infrared regions with large optical modulation (87.0% at 1500 nm and 85.3% at 633 nm), short bleaching–coloration times (1.1 s and 3.0 s), decent coloring efficiency (102.1 cm2 C−1) and excellent cycling stability (95.6% after 3000 cycles). The obtained WO3/TiO2 core-shell nanowire heterostructures may find great potential in producing electrochromic nanodevices and other energy-efficient applications.

AB - Unique WO3/TiO2 core-shell nanowire heterostructures are rationally constructed based on a solvothermal method combining magnetron sputtering. High resolution transmission electron microscopy (HRTEM) analysis evidences the existence of a semi-coherent interface between a hexagonal phase WO3 core and anatase TiO2 shell. X-ray photoelectron spectroscopy and optical absorption spectra suggest an interfacial interaction between the WO3 core and TiO2 shell. The WO3/TiO2 core-shell nanowires exhibit superior electrochromic performance in both visible and near infrared regions with large optical modulation (87.0% at 1500 nm and 85.3% at 633 nm), short bleaching–coloration times (1.1 s and 3.0 s), decent coloring efficiency (102.1 cm2 C−1) and excellent cycling stability (95.6% after 3000 cycles). The obtained WO3/TiO2 core-shell nanowire heterostructures may find great potential in producing electrochromic nanodevices and other energy-efficient applications.

KW - Core/shell nanowires

KW - Electrochromic

KW - Magnetron sputtering

KW - Titanium oxide

KW - Tungsten oxide

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DO - 10.1016/j.electacta.2019.135189

M3 - Article

SN - 0013-4686

VL - 330

JO - Electrochimica Acta

JF - Electrochimica Acta

M1 - 135189

ER -

Fabrication of WO₃/TiO₂ core-shell nanowire arrays: Structure design and high electrochromic performance

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