Self-Powered Flexible Electrochromic Smart Window

Wang, Jinlong; Sheng, Si-Zhe; He, Zhen; Wang, Rui; Pan, Zhao; Zhao, Hongbin; Liu, Jian‐Wei; Yu, Shu‐Hong

doi:10.1021/acs.nanolett.1c03438

Cited by 123 publications

(57 citation statements)

References 40 publications

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“…In addition, the inert ions involving the color/bleach process obviously inhibited the production of H 2 bubbles due to the priority of the electrochemical series. In fact, the ESW device could also be fabricated with flexible poly(ethylene terephthalate) (PET) substrates to form a flexible device (Figure S11), since flexible and wearable electrochromic devices are considered to be applied as next-generation wearable electronics, car sunroofs, sunglasses, and displays. ,, …”

Section: Resultsmentioning

confidence: 99%

Enhanced Contrast of WO₃-Based Smart Windows by Continuous Li-Ion Insertion and Metal Electroplating

Zhou

et al. 2022

ACS Appl. Mater. Interfaces

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The electrochromic WO3 smart window based on an aqueous electrolyte shows an excellent liquid/solid interface and thus can achieve a fast electrochromic response, while the aqueous electrolyte has a limited electrochemical window, which probably induces the H+ reduction and degrades the practical application. Here, we propose a strategy to modify the traditional Li+ acidic aqueous electrolyte by adding some selective inert metal ions, which not only improve the electrochromic performance but also avoid the possible production of hydrogen bubbles due to the broadened electrochemical window. Furthermore, reversible electroplating of inert metal ions will occur, leading to an enhanced optical transmission change of up to 77.5% at 500 nm and 70.4% at 700 nm. This combination of Li-ion insertion and metal electroplating in the ESW device makes it superior to all of the previous reports. The device also demonstrates high stability and high electrochromic efficiency after 1000 cycles. The current study not only emphasizes the rational design for aqueous electrolytes but also demonstrates a practical way to realize an excellent electrochromic window for practical applications.

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Section: Resultsmentioning

confidence: 99%

Enhanced Contrast of WO₃-Based Smart Windows by Continuous Li-Ion Insertion and Metal Electroplating

Zhou

et al. 2022

ACS Appl. Mater. Interfaces

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“…The average consumption of the anode metal (Al) for 12 h is about 0.18 mg/cm 2 , which costs only $ 0.01/m 2 /d with reference to the commercial price list in 1688.com ($ 2.82/kg), showing a low cost (Supplementary Fig. 19) 45 . The open-circuit voltage of the sensor showed ignorable decrement within the first 36 h of operation and then gradually decayed from 1.24 to 0.51 V in the second 36 h (Supplementary Fig.…”

Section: Characterization Of the Self-powered Ceh Sensormentioning

confidence: 99%

Humidity-sensitive chemoelectric flexible sensors based on metal-air redox reaction for health management

et al. 2022

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Numerous studies have shown flexible electronics play important roles in health management. The way of power supply is always an essential factor of devices and self-powered ones are very attractive because of the fabrication easiness, usage comfort and aesthetics of the system. In this work, based on the metal-air redox reaction, which is usually used in designing metal-air batteries, we design a self-powered chemoelectric humidity sensor where a silk fibroin (SF) and LiBr gel matrix containing parallel aligned graphene oxide (GO) flakes serve as the electrolyte. The abundant hydrophilic groups in GO/SF and the hygroscopicity of LiBr lead to tight dependence of the output current on the humidity, enabling the sensor high sensitivity (0.09 μA/s/1%), fast response (1.05 s) and quick recovery (0.80 s). As proofs of concept, we design an all-in-one respiratory monitoring-diagnosing-treatment system and a non-contact human-machine interface, demonstrating the applications of the chemoelectric humidity sensor in health management.

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“…Under a negative voltage of −0.5 V, the W 18 O 49 NWs became colored, and the film took on a gray appearance (Figure c–e). In addition, to consider more application scenarios, we designed a self-powered and flexible electrochromic smart window that integrated Ag/W 18 O 49 coassembly NW film with the Al sheet …”

Section: Precision Control Over Periodically Ordered Nanowire Structu...mentioning

confidence: 99%

Self-Assembly of Nanowires: From Dynamic Monitoring to Precision Control

Wang

Chen

et al. 2022

Acc. Chem. Res.

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Conspectus Natural biomaterials often show ordered nanowire structures (ONWS) which display unique structural color or superior mechanical performance. Meanwhile, plenty of modern nanodevices with ONWS have flourished with activities focused on both basic and applied research. Manipulating synthetic nanowire (NW) from a disordered state to a hierarchically ordered structure via various assembly strategies brings about intriguing and exotic chemical/physical properties. In the past decades, many methods have been developed to assemble NWs and fabricate organized architectures, such as Langmuir–Blodgett interfacial assembly, spin-coating assembly, fluid-flow-induced assembly, and ice-template assembly. Nevertheless, for practical applications, large-scale and high-efficiency assembly strategies toward precise controlled architectures are largely limited by the lack understanding of assembly mechanisms. Especially, the manipulation principles and driving forces behind the state-of-art assembly strategies are still unclear. Besides, the lesser research attention on dynamic kinetics also impedes the revelation of the NW self-assembly mechanism. With the emergence of advanced in situ techniques, such as synchrotron-based X-ray techniques and in situ transmission electron microscopy (TEM), the dynamic monitoring of NW behavior in many practical environments becomes possible. In addition, the alignment direction and the stacking manner of NW film are of significance to the final performance. There is a lack of connection between the properties of one-dimensional nanoscale building blocks and the functionalities of the macro-assembly structures. To this end, dynamic monitoring is highly desired, which enables the precision modulation of NW assembly structure, leading to the discovery or prediction of new structures, novel properties, and performance optimization. In this Account, we aim to uncover the underlying kinetics of NW assembly or local reaction and mass transportation processes, as well as to build a solid connection from individual NWs to NW assembly structures with enhanced properties and eventually to macroscopic materials application. We first review the recent progress in state-of-art NW assembly strategies for diverse aligned structures according to the manipulation principle and the driving forces. To systematically review the NW self-assembly strategies, we categorize these strategies into three states: NWs on the liquid interface via surface tension, NW assembly in liquid via solution-shearing flow field, and NW assembly at the solid interval via physical repulsive force. Then, we introduce the existing advanced characterization techniques, including synchrotron-based X-ray scattering and in situ TEM, to dynamically monitor the intermediate states of the NW assembly and transport processes. The comprehensive understanding of this thermodynamic and kinetic mechanism facilitates the rational design, large scale, and high-efficiency fabrication of NW assemblies, thus promoting their applications in tailored...

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Self-Powered Flexible Electrochromic Smart Window

Cited by 123 publications

References 40 publications

Enhanced Contrast of WO₃-Based Smart Windows by Continuous Li-Ion Insertion and Metal Electroplating

Enhanced Contrast of WO₃-Based Smart Windows by Continuous Li-Ion Insertion and Metal Electroplating

Humidity-sensitive chemoelectric flexible sensors based on metal-air redox reaction for health management

Self-Assembly of Nanowires: From Dynamic Monitoring to Precision Control

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Self-Powered Flexible Electrochromic Smart Window

Cited by 123 publications

References 40 publications

Enhanced Contrast of WO3-Based Smart Windows by Continuous Li-Ion Insertion and Metal Electroplating

Enhanced Contrast of WO3-Based Smart Windows by Continuous Li-Ion Insertion and Metal Electroplating

Humidity-sensitive chemoelectric flexible sensors based on metal-air redox reaction for health management

Self-Assembly of Nanowires: From Dynamic Monitoring to Precision Control

Contact Info

Product

Resources

About

Enhanced Contrast of WO₃-Based Smart Windows by Continuous Li-Ion Insertion and Metal Electroplating

Enhanced Contrast of WO₃-Based Smart Windows by Continuous Li-Ion Insertion and Metal Electroplating