Flexible all-solid-state supercapacitors based on PPy/rGO nanocomposite on cotton fabric

Shuzhen Xu; Huilian Hao; Yinan Chen; Wenyao Li; Wenzhong Shen; Paul R Shearing; Dan J L Brett; Guanjie He

doi:10.1088/1361-6528/abf9c4

Flexible all-solid-state supercapacitors based on PPy/rGO nanocomposite on cotton fabric

Nanotechnology. 2021 May 5;32(30). doi: 10.1088/1361-6528/abf9c4.

Authors

Shuzhen Xu¹, Huilian Hao¹, Yinan Chen¹, Wenyao Li^{1

2}, Wenzhong Shen³, Paul R Shearing², Dan J L Brett², Guanjie He^{2

4}

Affiliations

¹ College of Material Engineering, Shanghai University of Engineering Science 333 Long Teng Road, Shanghai 201620, People's Republic of China.
² Electrochemical Innovation Lab, Department of Chemical Engineering, University College London, London WC1E 7JE, United Kingdom.
³ Institute of Solar Energy, and Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), Department of Physics and Astronomy, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai 200240, People's Republic of China.
⁴ School of Chemistry, University of Lincoln, Joseph Banks Laboratories, Green Lane, Lincoln, LN6 7DL, United Kingdom.

PMID: 33878745
DOI: 10.1088/1361-6528/abf9c4

Abstract

Polypyrrole (PPy) has high electrochemical activity and low cost, so it has great application prospects in wearable supercapacitors. Herein, we have successfully prepared polypyrrole/reduced graphene oxide (PPy/rGO) nanocomposite cotton fabric (NCF) by chemical polymerization, which exhibits splendid electrochemical performance compared with the individual. The addition of rGO can block the deformation of PPy caused by the expansion and contraction. The as-prepared PPy-0.5/rGO NCF electrode exhibits the brilliant specific capacitance (9300 mF cm^-2at 1 mA cm^-2) and the capacitance retention with 94.47% after 10 000 cycles. At the same time, the superior capacitance stability under different bending conditions and reuse capability have been achieved. All-solid-state supercapacitor has high energy density of 167μWh cm^-2with a power density of 1.20 mW cm^-2. Therefore, the PPy-0.5/rGO NCF electrode has a broad application prospect in high-performance flexible supercapacitor fabric electrode.

Keywords: PPy; PPy/rGO nanocomposite; cotton fabric electrode; symmetric all-solid-state supercapacitor.