Highly robust and flexible WO3·2H2O/PEDOT films for improved electrochromic performance in near-infrared region

Qu, Hui‐Ying; Zhang, Xiang; Zhang, Hangchuan; Tian, Yue; Li, Na; Lv, Haiming; Hou, Shuai; Li, Xingang; Zhao, Jiupeng; Li, Yao

doi:10.1016/j.solmat.2016.12.030

Cited by 39 publications

(17 citation statements)

References 41 publications

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“…The cyclic voltammetry of the devices was analyzed by applying ±2 V at a scan rate of 50 mV/s, where the results are in accordance with other reported studies where the redox peaks are not fully visible in this potential range [14,15]. Moreover, the devices produced present a very low power consumption of only 2.86 μA•cm −2 .…”

Section: Resultssupporting

confidence: 87%

A Planar Electrochromic Device using WO3 Nanoparticles and a Modified Paper-Based Electrolyte

et al. 2018

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Electrochromic devices are increasing its interest in the last decades due to the wide range of applications, from smart windows to biosensors or from smart labels to super-capacitors. So, the development of simple and cost-effective production technologies based on solution process and mask less approach is of great interest. In this work, a new planar and flexible electrochromic device based on tungsten oxide (WO3) nanoparticles with a paper-based modified electrolyte was successfully produced, using a CO2 laser technology for electrodes patterning and hydrothermal synthesis for the nanoparticles production. The devices were fabricated with a paper pad inserted in the sensor area for hydration on time of usage, thus replacing the electrolyte material of a typical electrochromic structure with a multi-layer stack, eliminating leakage problems, easy integration with other devices and enhancing the shelf life of the devices to several months. The produced device presents a low power consumption of only 2.86 μA·cm−2, with a deep blue color and an initial charge modulation of 11.5.

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Section: Resultssupporting

confidence: 87%

A Planar Electrochromic Device using WO3 Nanoparticles and a Modified Paper-Based Electrolyte

et al. 2018

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“…To study the electrochemical performance of the m‐WO 3 electrode, CV measurements were conducted in the aqueous electrolyte of 1 m H 2 SO 4 , using a three‐electrode electrochemical system. Figure 7 b indicates the CV curves of the m‐WO 3 electrode at different scan rates from 20 to 100 mV s −1 over an OPW from −0.65 to 0.2 V. The CV curves of the m‐WO 3 electrode exhibit characteristics redox peaks of m‐WO 3 at around −0.41 V of the cathodic scan and −0.36 V of the anodic scan [75, 76] . These redox peaks may be attributed to the reversible intercalation/deintercalation of H + ions into/out of the m‐WO 3 structure during the charge (H + intercalation) and discharge (H + deintercalation) process (Equation ) [76] …”

Section: Resultsmentioning

confidence: 99%

A High‐Performance Asymmetric Supercapacitor Based on Tungsten Oxide Nanoplates and Highly Reduced Graphene Oxide Electrodes

Ashraf

Shah

Khan

et al. 2021

Chemistry A European J

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Tungsten oxide/graphene hybrid materials are attractive semiconductors for energy‐related applications. Herein, we report an asymmetric supercapacitor (ASC, HRG//m‐WO3 ASC), fabricated from monoclinic tungsten oxide (m‐WO3) nanoplates as a negative electrode and highly reduced graphene oxide (HRG) as a positive electrode material. The supercapacitor performance of the prepared electrodes was evaluated in an aqueous electrolyte (1 m H2SO4) using three‐ and two‐electrode systems. The HRG//m‐WO3 ASC exhibits a maximum specific capacitance of 389 F g−1 at a current density of 0.5 A g−1, with an associated high energy density of 93 Wh kg−1 at a power density of 500 W kg−1 in a wide 1.6 V operating potential window. In addition, the HRG//m‐WO3 ASC displays long‐term cycling stability, maintaining 92 % of the original specific capacitance after 5000 galvanostatic charge–discharge cycles. The m‐WO3 nanoplates were prepared hydrothermally while HRG was synthesized by a modified Hummers method.

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“…The composition of organic‐inorganic EC materials has gained the enhanced properties in electrochromic application such as high coloration efficiency (116.6 cm 2 /C at 633 nm) . In one of previous reports, WO 3 ⋅ 2H 2 O/20 % PEDOT film showed the coloration efficiency of 180.2 cm 2 /C . Results indicate that the optical features and coloration performance of dual‐electrochromic layers‐based ECDs (WO 3 ‐PEDOT/V 2 O 5 , WO 3 ‐PFu/V 2 O 5 ) were superior to either WO 3 ‐PEDOT/ITO or WO 3 ‐PFu/ITO (single‐electrochromic layer), which possess higher ▵T % and outstanding CE values.…”

Section: Resultsmentioning

confidence: 89%

“…The interactions between PEDTS and WO 3 nanoparticles become better stability of the hybrid ECD . As reported by Qu et al., electrochromic characteristics including a higher of Li‐ion diffusion coefficient (1.1×10 −9 cm 2 s −1 ), faster response times (2.6 s for bleaching time, and 4.4 s for coloration time), higher color efficiency (180.2 cm 2 C −1 ) and larger transmittance modulation (63.1 %) at 956 nm improved due to the excellent conductivity of PEDOT . Chang‐Jian et al.…”

Section: Introductionmentioning

confidence: 81%

High‐performance Flexible Complementary Electrochromic Device Based on Plasma Modified WO₃Nano Hybrids and V₂O₅Nanofilm with Low Operation Voltages

et al. 2018

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Tungsten trioxide‐poly(3,4‐ethylenedioxythiophene) (WO3‐PEDOT) and tungsten trioxide‐polyfuran (WO3‐PFu) were prepared by rf rotating plasma polymerization. Electrochromic hybrid thin films were fabricated onto flexible polyethylene terephthalate (PET)/ indium tin oxide (ITO) film using electron beam evaporation method. In order to deeply characterize all films, scanning electron microscopy‐energy dispersive X‐ray spectroscopy (SEM‐EDS) and electrochemical impedance spectroscopy (EIS) techniques were used. The counter electrode effect on plasma modified WO3 nano hybrids‐based electrochromic devices (ECDs) was evaluated. By incorporating flexible vanadium pentoxide (V2O5) film as counter electrode, complementary ECDs were constructed through combining the hybrid flexible films (WO3‐PEDOT, WO3‐PFu) as working electrodes, which exhibit highly efficient electrochromic performance with low voltage operation. Especially, WO3‐PEDOT/V2O5‐based ECD owns a high optical modulation of 61.5 % at 750 nm driven by −1.0 V (coloration) and +1 V (bleaching) with fast response times (coloration time: 13.58 s, bleaching time: 8.07 s) and a high coloration efficiency of 527 cm2 C−1. This study can supply useful and efficient avenue for designing flexible complementary electrochromic device for energy‐saving flexible electronics.

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Highly robust and flexible WO3·2H2O/PEDOT films for improved electrochromic performance in near-infrared region

Cited by 39 publications

References 41 publications

A Planar Electrochromic Device using WO3 Nanoparticles and a Modified Paper-Based Electrolyte

A Planar Electrochromic Device using WO3 Nanoparticles and a Modified Paper-Based Electrolyte

A High‐Performance Asymmetric Supercapacitor Based on Tungsten Oxide Nanoplates and Highly Reduced Graphene Oxide Electrodes

High‐performance Flexible Complementary Electrochromic Device Based on Plasma Modified WO₃Nano Hybrids and V₂O₅Nanofilm with Low Operation Voltages

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Highly robust and flexible WO3·2H2O/PEDOT films for improved electrochromic performance in near-infrared region

Cited by 39 publications

References 41 publications

A Planar Electrochromic Device using WO3 Nanoparticles and a Modified Paper-Based Electrolyte

A Planar Electrochromic Device using WO3 Nanoparticles and a Modified Paper-Based Electrolyte

A High‐Performance Asymmetric Supercapacitor Based on Tungsten Oxide Nanoplates and Highly Reduced Graphene Oxide Electrodes

High‐performance Flexible Complementary Electrochromic Device Based on Plasma Modified WO3Nano Hybrids and V2O5Nanofilm with Low Operation Voltages

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High‐performance Flexible Complementary Electrochromic Device Based on Plasma Modified WO₃Nano Hybrids and V₂O₅Nanofilm with Low Operation Voltages