Cu-doped W18O49 nanowire reticular films for electrochromic supercapacitors

Hongzhao Wu; Honglong Ning; Muyun Li; Chenxiao Guo; Xinglin Li; Tian Qiu; Zhuohui Xu; Cheng Luo; Rihui Yao; Junbiao Peng

doi:10.1063/5.0173746

APL Materials (Nov 2023)

Cu-doped W18O49 nanowire reticular films for electrochromic supercapacitors

Hongzhao Wu,
Honglong Ning,
Muyun Li,
Chenxiao Guo,
Xinglin Li,
Tian Qiu,
Zhuohui Xu,
Cheng Luo,
Rihui Yao,
Junbiao Peng

Affiliations

Hongzhao Wu: State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640, China
Honglong Ning: State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640, China
Muyun Li: State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640, China
Chenxiao Guo: State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640, China
Xinglin Li: State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640, China
Tian Qiu: Department of Intelligent Manufacturing, Wuyi University, Jiangmen 529020, China
Zhuohui Xu: Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, Yulin Normal University, Yulin 537000, China
Cheng Luo: School of Materials Science and Engineering, Hubei University of Automotive Technology, Shiyan 442002, China
Rihui Yao: State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640, China
Junbiao Peng: State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640, China

DOI: https://doi.org/10.1063/5.0173746
Journal volume & issue: Vol. 11, no. 11
pp. 111120 – 111120-16

Abstract

Read online

The method of improving the electrochromic properties of tungsten oxide by doping has attracted great interest. In this study, we successfully fabricated nanostructured tungsten oxide with different copper doping concentrations by a solvothermal method using copper chloride dihydrate and tungsten hexachloride as precursors. We found that the area-specific capacitance of the films gradually increased with the increase in doping concentration. The products were characterized by x-ray photoelectron spectroscopy, x-ray diffraction, scanning electron microscopy, cyclic voltammetry, and chronoamperometry. The results show that the films we fabricated are reticular structures composed of nanowires. The doping of copper can improve the electron conductivity and shorten the ion transmission distance, thus improving energy storage properties. When the doping concentration is 7% and the annealing temperature is 200 °C, the film had the largest surface capacitance of 17.89 mF/cm2 and the capacitance retention reached 58.23%.

Published in APL Materials

ISSN: 2166-532X (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Technology: Chemical technology: Biotechnology; Science: Physics
Website: http://aplmaterials.aip.org

About the journal