Designed growth of WO3/PEDOT core/shell hybrid nanorod arrays with modulated electrochromic properties

Shi, Yingdi; Zhang, Yong; Tang, Kaixuan; Cui, Jiewu; Shu, Xiaoyan; Wang, Yan; Liu, Jiaqin; Jiang, Ying; Tan, Hark Hoe

doi:10.1016/j.cej.2018.08.163

Cited by 81 publications

(17 citation statements)

References 38 publications

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“…At negative potentials, both PEDOT and WO 3 components absorb in the visible range, synergistically providing blue color of the PEDOT/WO 3 film. This observation is consistent with the data on the enhancement of electrochromic properties due to complementary change of both constituents in the composite film in the color (blue) at negative potential values available in the literature [35].…”

Section: Spectroelectrochemistrysupporting

confidence: 93%

Interactions in Electrodeposited Poly-3,4-Ethylenedioxythiophene—Tungsten Oxide Composite Films Studied with Spectroelectrochemistry

et al. 2021

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Cyclic voltammograms and optical absorption spectra of PEDOT/WO3 composite films were recorded in order to identify possible interactions and modes of improved performance of the composite as compared to the single materials. Changes in the shape of redox peaks related to the W(VI)/W(V) couple in the CVs of WO3 and the composite PEDOT/WO3 films indicate electrostatic interactions between the negatively charged tungsten oxide species and the positively charged conducting polymer. Smaller peak separation suggests a more reversible redox process due to the presence of the conducting polymer matrix, accelerating electron transfer between tungsten ions. Electronic absorption spectra of the materials were analyzed with respect to changes of the shapes of the spectra and characteristic band positions. There are no noticeable changes in the position of the electronic absorption bands of the main chromophores in the electronic spectra of the composite film. Obviously, the interactions accelerating the redox performance do not show up in the optical spectra. This suggests that the existing electrostatic interactions in the composite do not significantly change the opto-electronic properties of components of the composite but resulted in the redistribution of fractions of polaron and bipolaron forms in the polymer.

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Section: Spectroelectrochemistrysupporting

confidence: 93%

Interactions in Electrodeposited Poly-3,4-Ethylenedioxythiophene—Tungsten Oxide Composite Films Studied with Spectroelectrochemistry

et al. 2021

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“…In 2019, the team of Shi et al [101] presented a hybrid device comprising hybrid nanorods are composed of WO 3 nanocores wrapped by thin amorphous PEDOT nanoshells. Wrapped WO 3 nanocores present EC behaviour of a much shorter response time of approx.…”

Section: Application Of Nanostructures In Ec Device Designmentioning

confidence: 99%

A Systematic Review of the Most Recent Concepts in Smart Windows Technologies with a Focus on Electrochromics

Brzezicki

2021

Sustainability

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In the context of sustainability and in the face of ambitious goals towards the reduction of CO2 emission, the modification of transparency in architecture becomes an important tool of energy flow management into the building. Windows that dim to stop the energy transfer reduce the cooling load in the building. Recently, however, the latest achievements in the development of electrochromic materials allowed us to integrate some additional—previously unknown—functionalities into EC devices. The purpose of this paper is to provide a systematic review of recent technological innovations in the field of smart windows and present the possibilities of recently established functionalities. This review article outlines recent general progress in electrochromic but concentrates on multicolour and neutral black electrochromism, spectrally selective systems, electrochromic energy storage windows, hybrid EC/TC systems, OLED lighting integrated with the EC device, and EC devices powered by solar cells. The review was based on the most recent publication from the years 2015–2020 recorded in the databases WoS and Scopus.

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“…Tungsten trioxide (WO 3 ), as a typical electrochromic material, has been widely investigated. Its capacitance, however, remains low because the ionic diffusion coefficient is undesirable and the diffusion path is long [10]. Doping with transitional-metal ions is a commonly employed method to modify functional materials [11].…”

Section: Introductionmentioning

confidence: 99%

Construction of WO3/Ti-doped WO3 bi-layer nanopore arrays with superior electrochromic and capacitive performances

et al. 2019

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Crystalline WO 3 /Ti-doped WO 3 bi-layer nanopore arrays were constructed by the template synthesis of a WO 3 nanopore layer modified by a magnetron sputtering of an amorphous Ti-doped/WO 3 layer. The obtained bi-layer nanopore array shows a remarkable electrochromic performance with large dual-band optical modulation in both visible (VIS) and near infrared (NIR) regions (optical modulation of over 70% in the wavelength range from 600 to 1600 nm) and the fast response speed (coloring for 3.4 s and bleaching for 6.6 s). In addition, the bi-layer WO 3 /Ti-doped WO 3 nanopore array also present superior energy-storage properties (areal capacitance of 44.0 mF cm −2 and good rate capability), better than that of titanium-free thin films. The special bifunctional characteristics of electrochromism and pseudocapacitance can be ascribed to the large specific surface area provided by the architectural design, rich ion channels in the amorphous layer as well as proper titanium doping, which bestows the bi-layer nanopore array a great potential in clean energy applications.

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Designed growth of WO3/PEDOT core/shell hybrid nanorod arrays with modulated electrochromic properties

Cited by 81 publications

References 38 publications

Interactions in Electrodeposited Poly-3,4-Ethylenedioxythiophene—Tungsten Oxide Composite Films Studied with Spectroelectrochemistry

Interactions in Electrodeposited Poly-3,4-Ethylenedioxythiophene—Tungsten Oxide Composite Films Studied with Spectroelectrochemistry

A Systematic Review of the Most Recent Concepts in Smart Windows Technologies with a Focus on Electrochromics

Construction of WO3/Ti-doped WO3 bi-layer nanopore arrays with superior electrochromic and capacitive performances

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