Carbon Nanotube Fiber-Based Wearable Supercapacitors—A Review on Recent Advances

Kavitha Mulackampilly Joseph, Hunter J. Kasparian and Vesselin Shanov
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Kavitha Mulackampilly Joseph: Department of Mechanical and Materials Engineering, University of Cincinnati, Cincinnati, OH 45221, USA
Hunter J. Kasparian: Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221, USA
Vesselin Shanov: Department of Mechanical and Materials Engineering, University of Cincinnati, Cincinnati, OH 45221, USA

Energies, 2022, vol. 15, issue 18, 1-42

Abstract: As wearable electronic devices are becoming an integral part of modern life, there is a vast demand for safe and efficient energy storage devices to power them. While the research and development of microbatteries and supercapacitors (SCs) have significantly progressed, the latter has attracted much attention due to their excellent power density, longevity, and safety. Furthermore, SCs with a 1D fiber shape are preferred because of their ease of integration into today’s smart garments and other wearable devices. Fiber supercapacitors based on carbon nanotubes (CNT) are promising candidates with a unique 1D structure, high electrical and thermal conductivity, outstanding flexibility, excellent mechanical strength, and low gravimetric density. This review aims to serve as a comprehensive publication presenting the fundamentals and recent developments on CNT-fiber-based SCs. The first section gives a general overview of the supercapacitor types based on the charge storage mechanisms and electrode configuration, followed by the various fiber fabrication methods. The next section explores the different strategies used to enhance the electrochemical performance of these SCs, followed by a broad study on their stretchability and multifunctionality. Finally, the review presents the current performance and scalability challenges affecting the CNT-based SCs, highlighting their prospects.

Keywords: carbon nanotube fiber; energy storage; wearable technologies; supercapacitor; fiber spinning (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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