Polyoxometalate-MnO2 film structure with bifunctional electrochromic and energy storage properties

Wang, Shi-Ming; Jin, Yuan-Hang; Wang, Tao; Wang, Kai-Hua; Liu, Lin

doi:10.1016/j.jmat.2022.10.007

Cited by 6 publications

(2 citation statements)

References 53 publications

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“…Electrochromism, which refers to invertible change in the optical characteristics (reflectance, transmittance, or absorption) of some materials induced by an electric potential or current stimulus, has span its prospective applications into many branches of science and technology, involving smart windows, optical displays, antiglare car mirrors, and electrically tunable optics. − Generally, typical electrochromic devices can be divided into transmissive and reflective types based on their construction. However, regardless of the type of device utilized, the color of these electrochromic devices normally depends on the inherent characteristics of the electrochromic materials adopted, which can be inorganic or organic.…”

Section: Introductionmentioning

confidence: 99%

Full-Color-Adjustable Nanophotonic Device Adopting Electrochromic Poly(3,4-ethylenedioxythiophene) Thin Films

Tan,

Ren,

Han

2024

ACS Appl. Mater. Interfaces

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Intercalation-based organic polymers that shift their colors during ion insertion and extraction provide a significant basis for existing electrochromic technology. Nevertheless, the complexity of modifying the structure in the skeleton or combining several diverse polymers to produce a full-color range has restricted the practical applications of electrochromic materials. Herein, we demonstrate two configurations of the poly(3,4-ethylenedioxythiophene) (PEDOT) Fabry–Perot (F–P) nanocavity-type electrochromic devices fabricated by spray coating lossless PEDOT on the F–P metasurfaces (Cr/ITO/Ag/Cr), which allows full-color response by simply controlling the thickness of dielectric layer indium tin oxide (ITO). However, the reflected light from the PEDOT F–P nanocavity-type electrode can be modulated by electrically controllable optical absorption of PEDOT. Besides, the subtle brightness regulation could be obtained in our F–P nanocavity electrochromic devices via altering the PEDOT thickness. Overall, our results offer a novel perspective for versatile color control of PEDOT.

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Section: Introductionmentioning

confidence: 99%

Full-Color-Adjustable Nanophotonic Device Adopting Electrochromic Poly(3,4-ethylenedioxythiophene) Thin Films

Tan,

Ren,

Han

2024

ACS Appl. Mater. Interfaces

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“…Electrochromic devices (ECDs) capable of a reversible change in optical properties under applied voltage have attracted a lot of attention due to their great potential for use in modern smart windows, nonemitting displays, antiglare mirrors, and signage. In addition, the interest in the development of ECDs is fueled by a vast variety of suitable electrochromic materials (ECMs), which are based on inorganic , compounds, organic, − and metalorganic polymers − just to name a few. Among others, ECMs based on covalent immobilization of polypyridine complexes of transition metals onto high surface area electrodes have several advantages. , This includes a rapid charge transfer within the surface-confine monolayer and provides access to stable ECMs with fast switching times as well as substantial coloration efficiencies.…”

Section: Introductionmentioning

confidence: 99%

Nonconventional Symmetric Double-Side Electrochromic Devices Employing a Nafion Conductive Layer to Unlock Superior Durability

DiPalo,

Ahmad,

Ebralidze

et al. 2023

ACS Appl. Mater. Interfaces

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In this work, we present a methodology to create an effective novel double-sided symmetric architecture of solid-state electrochromic devices. This principally new nonconventional configuration provides access to novel electrochromic systems that could be applicable for the creation of smart double-side signage, smart boards, nonemissive displays, and other smart interactive devices that change their color upon application of a voltage. The proposed configuration is based on the assembly of two identical electrochromic materials facing each other through an opaque optical separator. As a proof of concept, we use an electrochromic material based on bis(4′-(pyridin-4-yl)-2,2′:6′,2″-terpyridine) iron complex, covalently immobilized on screenprinted surface-extended ITO support. The symmetric configuration allows for a drastic enhancement of the overall stability of the device due to both attenuation of the counter electrode polarization and minimization of electrolyte decomposition. A nontransparent ion-permeable separator, in turn, allows observing the color change of only one of the electrodes by cutting off the optical contribution of the electrode located behind it. Further functionalization of the electrochromic material with a thin layer of Nafion is a beneficial strategy to significantly boost up long-term durability of the devices. Applying a layer of Nafion to the electrochromic material results in an increase in ionic conductivity within the device and ensures better retention of electrochromic molecules on the surface, thus minimizing device decomposition during long-term electrochemical cycling. An electrochromic device that bears Nafion-functionalized electrodes can operate (i) in the dual-side mode, where both sides demonstrate effective electrochromic performance; or (ii) in a one-side manner, where only one side of the device changes color. Notably, when operating in the one-side mode, the device withstands 70,000 cycles, after which the performance of the device can be resumed by simply turning the device to the other side (via switching the polarity of the electrodes).

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Polyoxometalate/poly(3,4-ethylenedioxythiophene) nanocomposites enabling visualization of energy storage status in multicolor electrochromic supercapacitors

Feng,

Liu,

Mao

et al. 2023

Applied Surface Science

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Polyoxometalate-MnO2 film structure with bifunctional electrochromic and energy storage properties

Cited by 6 publications

References 53 publications

Full-Color-Adjustable Nanophotonic Device Adopting Electrochromic Poly(3,4-ethylenedioxythiophene) Thin Films

Full-Color-Adjustable Nanophotonic Device Adopting Electrochromic Poly(3,4-ethylenedioxythiophene) Thin Films

Nonconventional Symmetric Double-Side Electrochromic Devices Employing a Nafion Conductive Layer to Unlock Superior Durability

Polyoxometalate/poly(3,4-ethylenedioxythiophene) nanocomposites enabling visualization of energy storage status in multicolor electrochromic supercapacitors

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