Chinese Journal of Applied Chemistry ›› 2020, Vol. 37 ›› Issue (5): 555-561.DOI: 10.11944/j.issn.1000-0518.2020.05.190304

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Lithium Storage Properties of Non-woven Fabric Based Polypyrrole Flexible Electrodes

LIU Xuea,MA Huaa,XU Henga,JI Haiconga,WANG Dongab*()   

  1. aHubei Key Laboratory of Advanced Textile Materials & Application, College of Materials Science and Engineering,Wuhan Textile University,Wuhan 430200,China;
    bCollege of Chemistry,Chemical Engineering and Biotechnology,Donghua University,Shanghai 201620,China
  • Received:2019-11-14 Accepted:2020-02-20 Published:2020-05-01 Online:2020-04-29
  • Contact: WANG Dong
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.51873166)

Abstract:

Flexible lithium-ion batteries with high-performance play a significant role in the development of wearable electronics. Pyrrole was polymerized in situ on polyethylene terephthalate (PET) non-woven fabric substrate through chemical oxidation method. By controlling the reaction conditions, PET-based polypyrrole(PPy) flexible electrode (PPy/PET) with different morphologies can be obtained. When the shearing force is low, the morphology of resulting PPy was nanowires (NW), vice versa, nanoparticles (NP). The mean diameter of PPy-NW is 460 nm. PET is covered with the interconnected PPy-NW, forming three-dimensional netlike conducting pathways. The as-prepared samples are directly used as binder-free flexible electrodes. The results of electrochemical tests demonstrate that PPy-NW/PET is favorable for enhancing lithium storage performance. It delivers an initial discharge and charge capacity of 124 and 98 mA·h/g with superior flexibility and stability. This paper offers a strategy for the fabrication of flexible and lightweight electrode materials and their application in energy storage.

Key words: polypyrrole, non-woven fabric, flexibility, lithium ion battery