Abstract
Crystalline WO3/Ti-doped WO3 bi-layer nanopore arrays were constructed by the template synthesis of a WO3 nanopore layer modified by a magnetron sputtering of an amorphous Ti-doped/WO3 layer. The obtained bi-layer nanopore array shows a remarkable electrochromic performance with large dual-band optical modulation in both visible (VIS) and near infrared (NIR) regions (optical modulation of over 70% in the wavelength range from 600 to 1600 nm) and the fast response speed (coloring for 3.4 s and bleaching for 6.6 s). In addition, the bi-layer WO3/Ti-doped WO3 nanopore array also present superior energy-storage properties (areal capacitance of 44.0 mF cm−2 and good rate capability), better than that of titanium-free thin films. The special bifunctional characteristics of electrochromism and pseudocapacitance can be ascribed to the large specific surface area provided by the architectural design, rich ion channels in the amorphous layer as well as proper titanium doping, which bestows the bi-layer nanopore array a great potential in clean energy applications.
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21 August 2021
A Correction to this paper has been published: https://doi.org/10.1007/s42864-021-00115-4
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Acknowledgements
This project is supported by the National Natural Science Foundation of China (Grant Nos. 51772072 and 51701057), the 111 Project “New Materials and Technology for Clean Energy” (Grant No. B18018), the Foundation for Tianchang Intelligent Equipment and Instruments Research Institute (Grant No. JZ2017AHDS1147), the Natural Science Foundation of Anhui Province (Grant No. 1708085ME100), and the Fundamental Research Funds for the Central Universities (Grant Nos. PA2019GDQT0022, PA2019GDQT0015, 201710359015).
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Shi, Y., Liu, S., Zhang, Y. et al. Construction of WO3/Ti-doped WO3 bi-layer nanopore arrays with superior electrochromic and capacitive performances. Tungsten 1, 236–244 (2019). https://doi.org/10.1007/s42864-019-00024-7
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DOI: https://doi.org/10.1007/s42864-019-00024-7