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Exploring Vacuum-Assisted Thin Films toward Supercapacitor Applications: Present Status and Future Prospects
T Kedara Shivasharma1, Nakul Upadhyay1, Tushar Balasaheb Deshmukh1
1Nano Materials and Device Laboratory, Department of Physics, Visvesvaraya National Institute of Technology, South Ambazari Road, Nagpur, 440010 M.S., India.
ACS Omega
|October 23, 2023
Summary
Vacuum-assisted physical deposition techniques offer superior control for fabricating supercapacitor electrodes. This review comprehensively explores these methods for advanced energy storage applications.
Area of Science:
- Materials Science
- Energy Storage
- Nanotechnology
Background:
- Growing demand for high-performance energy storage devices.
- Supercapacitors offer advantages over batteries and conventional capacitors, including high power density and cycling stability.
- Fabrication of macro- to microscale supercapacitor devices requires precise control over electrode materials.
Purpose of the Study:
- To provide the first comprehensive review of vacuum-assisted physical deposition techniques for supercapacitor electrode fabrication.
- To explore the application of these techniques in supercapacitive energy storage.
- To analyze the theoretical background, process optimization, and characterization of materials for macro- to microscale supercapacitors.
Main Methods:
- Review of vacuum-assisted physical deposition techniques: thermal evaporation, e-beam evaporation, sputtering, and laser beam ablation.
- Analysis of nucleation and growth principles in physical deposition.
- Exploration of process parameter optimization and characterization methods for supercapacitive applications.
Main Results:
- Vacuum-assisted techniques yield high-purity films with precise dimensions and excellent substrate adhesion, crucial for micro-supercapacitors.
- A wide range of materials fabricated via these methods have been reviewed for their supercapacitive performance.
- Critical analysis of existing literature on vacuum-assisted fabrication for energy storage applications.
Conclusions:
- Vacuum-assisted physical deposition is a vital, yet underexplored, route for advanced supercapacitor electrode fabrication.
- Further research is needed to explore novel materials and optimize processes for enhanced supercapacitive performance.
- These techniques hold significant potential for developing next-generation macro- to microscale energy storage devices.
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