Porous WO3/graphene/polyester textile electrode materials with enhanced electrochemical performance for flexible solid-state supercapacitors

Li-Na Jin; Ping Liu; Chun Jin; Jia-Nan Zhang; Shao-Wei Bian

doi:10.1016/j.jcis.2017.08.103

Porous WO₃/graphene/polyester textile electrode materials with enhanced electrochemical performance for flexible solid-state supercapacitors

J Colloid Interface Sci. 2018 Jan 15:510:1-11. doi: 10.1016/j.jcis.2017.08.103. Epub 2017 Sep 1.

Authors

Li-Na Jin¹, Ping Liu¹, Chun Jin¹, Jia-Nan Zhang¹, Shao-Wei Bian²

Affiliations

¹ College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, PR China.
² College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, PR China. Electronic address: bianshaowei@iccas.ac.cn.

PMID: 28926723
DOI: 10.1016/j.jcis.2017.08.103

Abstract

In this work, a flexible and porous WO₃/grapheme/polyester (WO₃/G/PT) textile electrode was successfully prepared by in situ growing WO₃ on the fiber surface inside G/PT composite fabrics. The unique electrode structure facilitates to enhance the energy storage performance because the 3D conductive network constructed by the G/PT increase the electron transportation rate, nanotructured WO₃ exposed enhanced electrochemically active surface area and the hierarchically porous structure improved the electrolyte ion diffusion rate. The optimized WO₃/G/PT textile electrode exhibited good electrochemical performance with a high areal capacitance of 308.2mFcm^-2 at a scan rate of 2mVs^-1 and excellent cycling stability. A flexible asymmetric supercapacitor (ASC) device was further fabricated by using the WO₃/G/PT electrode and G/PT electrode, which exhibited a good specific capacitance of 167.6mFcm^-3 and high energy density of 60μWhcm^-3 at the power density of 2320 μWcm^-3.

Keywords: Electrode materials; Flexible supercapacitors; Graphene; Textile; WO(3).