Chinese Journal of Applied Chemistry ›› 2020, Vol. 37 ›› Issue (5): 547-554.DOI: 10.11944/j.issn.1000-0518.2020.05.190327

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Cellulose Gel Polymer Electrolytes and Its Application in Supercapacitors

ZHANG Xiaoboa,XIN Haiyinga,XU Shuanga,ZHANG Xinghaib*(),WANG Liqiuac*()   

  1. aCollege of Environmental and Chemical Engineering,Yanshan University,Qinhuangdao,Hebei 066004,China
    bSchool of Physical Education,Yanshan University,Qinhuangdao,Hebei 066004,China
    cKey Laboratory of Advanced Energy Materials Chemistry(Ministry of Education),College of Chemistry,Nankai University,Tianjin 300071,China
  • Received:2019-12-01 Accepted:2020-02-19 Published:2020-05-01 Online:2020-04-29
  • Contact: ZHANG Xinghai,WANG Liqiu
  • Supported by:
    Supported by Hebei Natural Science Foundation(No.B2019203500), the Open Fund of Key Laboratory of Advanced Energy Materials Chemistry, Ministry of Education(2018) and Hebei Social Science Foundation(No.HB18TY020)

Abstract:

A cellulose gel electrolyte (XWD-NaOH) was obtained through static hydration and crosslinking of cellulose pulp viscose solution, followed by introducing potassium ferrocyanide into XWD-NaOH to give a gel electrolyte (XWD-NaOH-K4[Fe(CN)6]). XWD-NaOH-K4[Fe(CN)6] has excellent redox activity and ionic conductivity (15.3 mS/cm). At 0.5 A/g current density, XWD-NaOH-K4[Fe(CN)6] electrolyte supercapacitor exhibits an increase of the electrode specific capacitance, power density and energy density by 57%, 111% and 214% compared to those of XWD-NaOH system. The XWD-NaOH-K4[Fe(CN)6] system has low internal resistance, charge transfer resistance and high cycle stability

Key words: cellulose pulp, gel polymer electrolyte, potassium ferrocyanide, supercapacitor