Pullanchiyodan, A., Manjakkal, L. , Ntagios, M. and Dahiya, R. (2021) MnOx-electrodeposited fabric-based stretchable supercapacitor with intrinsic strain sensing. ACS Applied Materials and Interfaces, 13(40), pp. 47581-47592. (doi: 10.1021/acsami.1c12526) (PMID:34592809)
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Abstract
The increasing number of devices needed by wearable systems to bring radical advances in healthcare, robotics, and human–machine interfaces is a threat to their growth if the integration and energy-related challenges are not managed. A natural solution is to reduce the number of devices while retaining the functionality or simply using multifunctional devices, as demonstrated here through a stretchable supercapacitor (SSC) with intrinsic strain sensing. The presented SSC was obtained by electrodeposition of nanoflower MnOx on fabric (as a pseudocapacitive electrode) and three-dimensional conductive wrapping of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) to boost the performance. Among fabricated devices, the stretchable PEDOT:PSS/MnOx/PEDOT:PSS supercapacitor (SPMP-SC) showed the best performance (specific capacitance of 580 mF·cm–2 (108.1 F·g–1); energy density of 51.4 μWh·cm–2 at 0.5 mA). The stretchability (0–100%; 1000 cycles) analysis of SPMP-SC with Ecoflex encapsulation showed high capacitance retention (>90% for 40% stretch). The intrinsic strain sensing of the SSC was confirmed by the linear variation of capacitance (sensitivity −0.4%) during stretching. Finally, as a proof-of-concept, the application of SSC with intrinsic sensing was demonstrated for health monitoring through volumetric expansion of a manikin during ventilator operation and in robotics and by measuring the joint angle of a robotic hand.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Ntagios, Markellos and Manjakkal, Dr Libu and Dahiya, Professor Ravinder and Pullanchiyodan, Dr Abhilash |
| Authors: | Pullanchiyodan, A., Manjakkal, L., Ntagios, M., and Dahiya, R. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | ACS Applied Materials and Interfaces |
| Publisher: | American Chemical Society |
| ISSN: | 1944-8244 |
| ISSN (Online): | 1944-8252 |
| Published Online: | 01 October 2021 |
| Copyright Holders: | Copyright © 2021 The Authors |
| First Published: | First published in ACS Applied Materials and Interfaces 13(40): 47581-47592 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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