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Nano Research

Article Title

Polypyrrole-based hybrid nanostructures grown on textile for wearable supercapacitors

Authors

Lingchang Wang, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China Tianjin Key Laboratory for Photoelectric Materials & Devices, Tianjin University of Technology, Tianjin 300384, China Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education, Tianjin University of Technology, Tianjin 300384, China
Chenguang Zhang, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China Tianjin Key Laboratory for Photoelectric Materials & Devices, Tianjin University of Technology, Tianjin 300384, China Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education, Tianjin University of Technology, Tianjin 300384, China
Xin Jiao, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China Tianjin Key Laboratory for Photoelectric Materials & Devices, Tianjin University of Technology, Tianjin 300384, China Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education, Tianjin University of Technology, Tianjin 300384, China
Zhihao Yuan, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China Tianjin Key Laboratory for Photoelectric Materials & Devices, Tianjin University of Technology, Tianjin 300384, China Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education, Tianjin University of Technology, Tianjin 300384, China

Keywords

wearable supercapacitor, polypyrrole nanotube, carbon nano-onion, template-degrading method, stretchable electrode

Abstract

In the development of wearable energy devices, polypyrrole (PPy) is considered as a promising electrode material owing to its high capacitance and good mechanical flexibility. Herein, we report a PPy-based hybrid structure consisting of vertical PPy nanotube arrays and carbon nano-onions (CNOs) grown on textile for wearable supercapacitors. In this hybrid nanostructure, the vertical PPy nanotubes provide straight and superhighways for electron and ion transport, boosting the energy storage; while the CNOs mainly act as a conductivity retainer for the underlayered PPy film during stretching. A facile template-degrading method is developed for the large-area growth of the PPy-based hybrid nanostructures on the textile through one-step polymerization process. The fabricated stretchable supercapacitor exhibits superior energy storage capacitance with the specific capacitance of 64 F·g−1. Also, it presents the high capacitance retention of 99% at a strain of 50% after 500 stretching cycles. Furthermore, we demonstrate that the textile-based stretchable supercapacitor device can provide a stable energy storage performance in different wearable situations for practical applications. The use of the PPy-based hybrid nanostructures as the supercapacitor electrode offers a novel structure design and a promising opportunity for wearable power supply in real applications.

Graphical Abstract

Publisher

Tsinghua University Press

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