Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (03): 90-95.doi: 10.13475/j.fzxb.20180301406

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Preparation and properties of graphene-knitted electrode materials

YANG Jing, LIU Yanjun()   

  1. School of Texitile Science & Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi 710048, China
  • Received:2018-03-05 Revised:2018-12-16 Online:2019-03-15 Published:2019-03-15
  • Contact: LIU Yanjun E-mail:535211681@qq.com

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Abstract:

In order to achieve better combination of graphene and fabric, flexible supercapacitors with foldable and good electrochemical properties were prepared, using ethanol and N, N-dimethylformamide as solvents and the flake graphite as a solute. Graphene solution was prepared by liquid phase stripping method, and graphene was loaded onto knitted fabric surface by electrochemical deposition method. The surface morphology, content and composition of the knitted fabric and the flexible electrode were analyzed by scanning electron microscopy and Fourier transform infrared spectrometry. Research results indicate that the number of graphene layers loaded on the surface of the fabric is smaller, the agglomeration is not obvious, and the graphene is loaded on the fabric successfully by electrochemical deposition. When the electrodeposition time is 90 min, the specific capacitance of graphene-fabric electrode material is 464.3 F/g, and the equivalent series resistance is 10.45 Ω, showing good capacitance, conductivity, cycle performance and flexibility.

Key words: graphene, flexible electrode material, liquid-phase stripping, electrochemical deposition

CLC Number: 

  • TS101.8

Fig.1

SEM images of surface of knitted fabrics before (a) and after (b) preprocessing(×2 000)"

Fig.2

SEM images of GN-C fabric electrode under different electrodeposition time(×20 000)"

Fig.3

SEM image(a)and EDS energy spectrum (b) of GN-C fabric electrode"

Fig.4

FT-IR spectra of knitted fabric and GN-C fabric electrode"

Fig.5

Electrochemical performance diagram of GN-C fabric electrode material. (a) CV curve; (b) Relation diagram of scan rate vs. specific capacitance;(c) GCD curve;(d) Test curve of cycle performance"

Fig.6

Equivalent model of electrolytic cell"

Fig.7

Nyquist diagram of GN-C fabric electrode"

Fig.8

Folding performance of GN-C fabric electrode. (a) CV curve with different folding times;(b) Relation diagram of specific capacitance vs. folding times"

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