The Study on the Capacitive Properties of Tungsten Oxide/Graphene Composites Prepared by Ultrasonic Spray Deposition
Chi-Ping Li, Chien-Chung Su
TL;DR
This study explores the use of tungsten oxide/graphene composites as supercapacitor electrodes, showing improved performance and stability.
Contribution
The novel use of ultrasonic spray deposition to create a WO3/graphene composite with enhanced electrochemical properties.
Findings
The WO3/graphene electrode achieved a specific capacitance of 161.68 F g–1 at 5 mV s–1.
The composite electrode retained 71% of its capacitance after 1000 cycles.
The graphene interlayer significantly improved ionic conductivity and electrochemical performance.
Abstract
The fabrication of tungsten oxide/graphene thin films on fluorine-doped tin oxide (FTO) glass substrates using ultrasonic spray deposition technology is presented, and their potential application as supercapacitor electrode materials is explored. Ultrasonic spray deposition provides precise control over film thickness, low fabrication cost, scalability for large-area coating, and compatibility with green solvents, making it a sustainable thin-film deposition method. A template-assisted sol–gel chemistry was employed to synthesize mesoporous tungsten oxide films with high specific surface area, enabling enhanced charge adsorption/desorption and improved electrochemical performance. To further enhance the ionic conductivity, a graphene interlayer was introduced between the WO3 film and the FTO substrate, forming a composite electrode structure. Electrochemical characterization using…
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Taxonomy
TopicsSupercapacitor Materials and Fabrication · Transition Metal Oxide Nanomaterials · Advancements in Battery Materials