Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (12): 22-28.doi: 10.13475/j.fzxb.20210808608

• Fiber Materials • Previous Articles     Next Articles

Preparation and electrochemical performances of melt-blown nonwovens electrode from medical mask

WANG Hongjie1,2, YAO Lan1, WANG He1,3(), ZHANG Zhong1   

  1. 1. School of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui 241000, China
    2. Anhui Province International Cooperation Research Center of Textile Structure Composite Materials, Anhui Polytechnic University, Wuhu, Anhui 241000, China
    3. Anhui Engineering and Technology Research Center of Textile, Anhui Polytechnic University, Wuhu, Anhui 241000, China
  • Received:2021-08-23 Revised:2022-05-09 Online:2022-12-15 Published:2023-01-06
  • Contact: WANG He E-mail:wanghe@ahpu.edu.cn

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Abstract:

In order to achieve high-value application of waste medical masks in the field of energy storage, silver plating and carbon coating methods were used to treat the inner melt-blown nonwovens surface of disposable medical masks to prepare electric double-layer electrodes, and finally the supercapacitor devices were assembled. The electrochemical performances of melt-blown nonwovens electrode and as-prepared device were characterized by cyclic voltammetry, galvanostatic charge-discharge, and AC impedance methods. The results show that the specific capacitance of the electrode is as high as 298 F/g when the current density is 1 A/g and 224 F/g at the current density of 20 A/g, showing a higher rate capability (75%) with the charge transfer internal resistance and equivalent series internal resistance of the electrode being 0.86 and 0.15 Ω, respectively. The energy density of the device reaches 9.7 W·h/kg under the power density of 125 W/kg. After 10 000 charge/discharge cycles, the specific capacitance retention of the device is as high as 99.8%, indicating the excellent cycling stability.

Key words: melt-blown nonwovens, electric double-layer electrode, supercapacitor, electrochemistry, waste medical mask, high-value utilization

CLC Number: 

  • TS179

Fig.1

Structure diagram of supercapacitor"

Fig.2

SEM images and macro view after bending of melt-blown nonwovens (a), silver-coated melt-blown nonwovens(b) and melt-blown nonwovens electrode (c)"

Fig.3

FT-IR spectra of melt-blown nonwovens, silver-coated melt-blown nonwovens and melt-blown nonwovens electrode"

Fig.4

Stress-strain curve of melt-blown nonwovens, silver-coated melt-blown nonwovens and melt-blown nonwovenselectrode"

Fig.5

Nitrogen adsorption-desorption isothermal curves (a) and pore diameter distribution curves(b)"

Fig.6

XRD patterns(a) and Raman spectra(b) of activated carbon"

Fig.7

CV (a), GCD (b) and rate capability curves (c) of electrode"

Fig.8

EIS spectra of electrode"

Fig.9

CV curves (a) GCD curves (b), and rate capability curves (c) of device"

Fig.10

EIS spectra (a) and cycling performance (b) of device"

Fig.11

Relationship curve of power density and energy density of device"

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