Cu-doped W18O49 nanowire reticular films for electrochromic supercapacitors
Source abstract
Abstract
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%.
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Research context
OpenAlex topics: Transition Metal Oxide Nanomaterials · Conducting polymers and applications · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology 1 , Guangzhou 510640, China
Department of Intelligent Manufacturing, Wuyi University 2 , Jiangmen 529020, China
Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, Yulin Normal University 3 , Yulin 537000, China
School of Materials Science and Engineering, Hubei University of Automotive Technology 4 , Shiyan 442002, China
Funding
National Key R&D Program of China · National Natural Science Foundation of China · Guangdong Natural Science Foundation · Educational Commission of Guangdong Province · The Science Foundation of Yulin Normal University · Ji Hua Laboratory Scientific Research Project
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