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Title: A Solid-State Wire-Shaped Supercapacitor Based on Nylon/Ag/Polypyrrole and Nylon/Ag/MnO2 Electrodes
Authors: Zhang, R
Wang, X
Cai, S
Tao, K
Xu, Y
Keywords: wire-shaped asymmetric supercapacitor;polypyrrole;MnO2;nylon;wearable electronics
Issue Date: 24-Mar-2023
Publisher: MDPI
Citation: Zhang, R. et al (2023) 'A Solid-State Wire-Shaped Supercapacitor Based on Nylon/Ag/Polypyrrole and Nylon/Ag/MnO2 Electrodes', Polymers, 15 (7), 1627, pp. 1 - 18. doi: 10.3390/polym15071627.
Abstract: Copyright © 2023 by the authors. In this work, a novel wire-shaped supercapacitor based on nylon yarn with a high specific capacitance and energy density was developed by designing an asymmetric configuration and integrating pseudocapacitive materials for both electrodes. The nylon/Ag/MnO2 yarn was prepared as a positive electrode by electrochemically depositing MnO2 on a silver-paste-coated nylon yarn. Additionally, PPy was prepared on nylon/Ag yarn by chemical polymerization firstly to enlarge the surface roughness of nylon/Ag, and then the PPy could be easily coated on the chemically polymerized nylon/Ag/PPy by electrochemical polymerization to obtain a nylon/Ag/PPy yarn-shaped negative electrode. The wire-shaped asymmetric supercapacitor (WASC) was fabricated by assembling the nylon/Ag/MnO2 electrode, nylon/Ag/PPy electrode and PAANa/Na2SO4 gel electrolyte. This WASC showed a wide potential window of 1.6 V and a high energy density varying from 13.9 to 4.2 μWh cm−2 with the corresponding power density changing from 290 to 2902 μW cm−2. Meanwhile, because of the high flexibility of the nylon substrate and superior adhesion of active materials, the WASC showed a good electrochemical performance stability under different bending conditions, suggesting its good flexibility. The promising performance of this novel WASC is of great potential for wearable/portable devices in the future.
Description: Data Availability Statement: The data that support the findings of this study are available from the corresponding author [Ruirong Zhang], upon reasonable request.
Other Identifiers: ORCID iDs: Kai Tao; Yanmeng Xu
Appears in Collections:Brunel Design School Research Papers

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