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Reversible Zn²⁺ Insertion in Tungsten Ion-Activated Titanium Dioxide Nanocrystals for Electrochromic Windows.

ABSTRACT: Zinc-anode-based electrochromic devices (ZECDs) are emerging as the next-generation energy-efficient transparent electronics. We report anatase W-doped TiO₂ nanocrystals (NCs) as a Zn²⁺ active electrochromic material. It demonstrates that the W doping in TiO₂ highly reduces the Zn²⁺ intercalation energy, thus triggering the electrochromism. The prototype ZECDs based on W-doped TiO₂ NCs deliver a high optical modulation (66% at 550 nm), fast spectral response times (9/2.7 s at 550 nm for coloration/bleaching), and good electrochemical stability (8.2% optical modulation loss after 1000 cycles).

SUBMITTER: Liang Y

PROVIDER: S-EPMC8440694 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature

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Reversible Zn2+ Insertion in Tungsten Ion-Activated Titanium Dioxide Nanocrystals for Electrochromic Windows.

Liang Yi Y Cao Sheng S Wei Qilin Q Zeng Ruosheng R Zhao Jialong J Li Haizeng H Yu William W WW Zou Bingsuo B

Nano-micro letters 20210914 1

Zinc-anode-based electrochromic devices (ZECDs) are emerging as the next-generation energy-efficient transparent electronics. We report anatase W-doped TiO2 nanocrystals (NCs) as a Zn2+ active electrochromic material. It demonstrates that the W doping in TiO2 highly reduces the Zn2+ intercalation energy, thus triggering the electrochromism. The prototype ZECDs based on W-doped TiO2 NCs deliver a high optical modulation (66% at 550 nm), fast ...[more]

PMID: 34523029

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