SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2022, Vol. 47 ›› Issue (7): 1-10.DOI: 10.1016/j.cjche.2021.05.045

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Chemical reduction-induced fabrication of graphene hybrid fibers for energy-dense wire-shaped supercapacitors

Minjie Shi1, Hangtian Zhu1, Cheng Yang2, Jing Xu1, Chao Yan1   

  1. 1. School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
    2. China Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
  • Received:2021-02-19 Revised:2021-05-06 Online:2022-08-19 Published:2022-07-28
  • Contact: Chao Yan,E-mail:chaoyan@just.edu.cn
  • Supported by:
    We greatly acknowledge the funding for this project through the National Natural Science Foundation of China (52002157, 51873083), the Natural Science Foundation of Jiangsu Province (BK20190976), the University Natural Science Research Project of Jiangsu Province (19KJB430017), the Opening Project of State Key Laboratory of Polymer Materials Engineering (Sichuan University) (sklpme2018-4-27).

Chemical reduction-induced fabrication of graphene hybrid fibers for energy-dense wire-shaped supercapacitors

Minjie Shi1, Hangtian Zhu1, Cheng Yang2, Jing Xu1, Chao Yan1   

  1. 1. School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
    2. China Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
  • 通讯作者: Chao Yan,E-mail:chaoyan@just.edu.cn
  • 基金资助:
    We greatly acknowledge the funding for this project through the National Natural Science Foundation of China (52002157, 51873083), the Natural Science Foundation of Jiangsu Province (BK20190976), the University Natural Science Research Project of Jiangsu Province (19KJB430017), the Opening Project of State Key Laboratory of Polymer Materials Engineering (Sichuan University) (sklpme2018-4-27).

Abstract: The emerging one-dimensional wire-shaped supercapacitors (SCs) with structural advantages of low mass/volume structural advantages hold great interests in wearable electronic engineering. Although graphene fiber (GF) has full of vigor and tremendous potentiality as promising linear electrodefor wire-shaped SCs, simultaneously achieving its facile fabrication process and satisfactory electrochemical performance still remains challenging to date. Herein, two novel types of graphene hybrid fibers, namely ferroferric oxide dots (FODs)@GF and N-doped carbon polyhedrons (NCPs)@GF, have been proposed via a simple and efficient chemical reduction-induced fabrication. Synergistically coupling the electroactive units (FODs and NCPs) with conductive graphene nanosheets endows the fiber-shaped architecture with boosted electrochemical activity, high flexibility and structural integrity. The resultant FODs@GF and NCPs@GF hybrid fibers as linear electrodes both exhibit excellent electrochemical behaviors, including large volumetric specific capacitance, good rate capability, as well as favorable electrochemical kinetics in ionic liquid electrolyte. Based on such two linear electrodes and ionogel electrolyte, a high-performance wire-shaped SC is effectively assembled with ultrahigh volumetric energy density (26.9 mW·h·cm-3), volumetric power density (4900 mW·cm-3) and strong durability over 10,000 cycles under straight/bending states. Furthermore, the assembled wire-shaped SC with excellent flexibility and weavability acts as efficient energy storage device for the application in wearable electronics.

Key words: Nanotechnology, Chemical processes, Ionic liquids, Hybrid fiber, Wearable electronics

摘要: The emerging one-dimensional wire-shaped supercapacitors (SCs) with structural advantages of low mass/volume structural advantages hold great interests in wearable electronic engineering. Although graphene fiber (GF) has full of vigor and tremendous potentiality as promising linear electrodefor wire-shaped SCs, simultaneously achieving its facile fabrication process and satisfactory electrochemical performance still remains challenging to date. Herein, two novel types of graphene hybrid fibers, namely ferroferric oxide dots (FODs)@GF and N-doped carbon polyhedrons (NCPs)@GF, have been proposed via a simple and efficient chemical reduction-induced fabrication. Synergistically coupling the electroactive units (FODs and NCPs) with conductive graphene nanosheets endows the fiber-shaped architecture with boosted electrochemical activity, high flexibility and structural integrity. The resultant FODs@GF and NCPs@GF hybrid fibers as linear electrodes both exhibit excellent electrochemical behaviors, including large volumetric specific capacitance, good rate capability, as well as favorable electrochemical kinetics in ionic liquid electrolyte. Based on such two linear electrodes and ionogel electrolyte, a high-performance wire-shaped SC is effectively assembled with ultrahigh volumetric energy density (26.9 mW·h·cm-3), volumetric power density (4900 mW·cm-3) and strong durability over 10,000 cycles under straight/bending states. Furthermore, the assembled wire-shaped SC with excellent flexibility and weavability acts as efficient energy storage device for the application in wearable electronics.

关键词: Nanotechnology, Chemical processes, Ionic liquids, Hybrid fiber, Wearable electronics