A high-performance electrochromic device assembled with WO3/Ag and TiO2/NiO composite electrodes towards smart window

Haorui Liu, Jikai Yang, Decai Nie, Chunlei Liu, Liumenghan Zheng, Yining Mu, Weijun Chen

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Front. Mater. Sci. ›› 2024, Vol. 18 ›› Issue (1) : 240674. DOI: 10.1007/s11706-024-0674-z
RESEARCH ARTICLE

A high-performance electrochromic device assembled with WO3/Ag and TiO2/NiO composite electrodes towards smart window

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Abstract

The choice of cathode and anode materials for electrochromic devices plays a key role in the performance of electrochromic smart windows. In this research, WO3/Ag and TiO2/NiO composite thin films were separately prepared by the hydrothermal method combined with electrodeposition. The electrochromic properties of the single WO3 thin film were optimized, and TiO2/NiO composite films showed better electrochromic performance than that of the single NiO film. WO3/Ag and TiO2/NiO composite films with excellent electrochromic properties were respectively chosen as the cathode and the anode to construct a WO3/Ag‒TiO2/NiO electrochromic device. The response time (tc = 4.08 s, tb = 1.08 s), optical modulation range (35.91%), and coloration efficiency (30.37 cm2·C−1) of this electrochromic device are better than those of WO3‒NiO and WO3/Ag‒NiO electrochromic devices. This work provides a novel research idea for the performance enhancement of electrochromic smart windows.

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Keywords

WO3/Ag composite film / TiO2/NiO composite film / electrochromic device

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Haorui Liu, Jikai Yang, Decai Nie, Chunlei Liu, Liumenghan Zheng, Yining Mu, Weijun Chen. A high-performance electrochromic device assembled with WO3/Ag and TiO2/NiO composite electrodes towards smart window. Front. Mater. Sci., 2024, 18(1): 240674 https://doi.org/10.1007/s11706-024-0674-z

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Declaration of competing interests

The authors declare that they have no competing interests.

Acknowledgements

This work was supported by the Natural Science Foundation of Chongqing City (Grant Nos. CSTB2022NSCQ-MSX0751 and cstc2021jcyj-msxmX0500), the Education Department Project of Jilin Province (Grant No. JJKH20220726KJ), the Science and Technology Department Project of Jilin Province (Grant No. 20200201077JC), and the National Natural Science Foundation of China (Grant No. U2141239).

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