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A simple and large-scale method to prepare flexible hollow graphene fibers for a high-performance all-solid fiber supercapacitor

Version 2 2024-06-06, 09:46
Version 1 2017-10-27, 15:53
journal contribution
posted on 2024-06-06, 09:46 authored by D Jiang, J Zhang, C Li, Wenrong YangWenrong Yang, J Liu
Herein, we develop a spray deposition process for the production of flexible and conductive hollow graphene fibers (HGFs). Firstly, a graphene oxide suspension is spray-coated on silk fibers, which act as a template, followed by the reduction of GO into RGO using HI as the reductant. This simple method gets rid of the picky conditions and complicated process for the fabrication of graphene fibers (GFs) which possess good flexibility, conductivity and a hollow structure. A flexible all-solid hollow graphene fiber supercapacitor (HGFS) is assembled using the as-prepared HGFs and shows an excellent specific capacitance of 76.1 F g -1 (127.4 mF cm -2 , 48.5 F cm -3 ) at a current density of 1 A g -1 , excellent rate capability (over 87% retention at 5 A g -1 ) and high cycling stability with only 9.5% capacitance decay over 2000 recycles at a scan rate of 100 mV s -1 . This simple large-scale template method for the preparation of flexible and conductive HGF electrodes could promise broad prospects for high-performance energy storage applications, particularly for next-generation wearable electronic devices.

History

Journal

New journal of chemistry

Volume

41

Pagination

11792-11799

Location

London, Eng.

ISSN

1144-0546

eISSN

1369-9261

Language

eng

Publication classification

C Journal article, C1 Refereed article in a scholarly journal

Copyright notice

2017, Royal Society of Chemistry and the Centre National de la Recherche Scientifique

Issue

20

Publisher

Royal Society of Chemistry

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