Sulfated Cellulose/Polyvinyl Alcohol Composites as Proton Conducting Electrolyte for Capacitors

Boor Singh Lalia, Maitha Alkaabi, Raed Hashaikeh

Research output: Contribution to journalConference articlepeer-review

Abstract

Supercapacitors are attractive devices for energy storage because of their high power density. Electrolytes are important components in supercapacitors because their electrochemical properties directly influence the performance and the internal resistance of the capacitor. In this work, cellulose was modified to be used as an electrolyte. Sulfated cellulose (SC) was prepared by esterification of micro-crystalline cellulose and characterized by elemental analysis, gel permeation chromatography and x-ray diffraction. The sulfated cellulose was dispersed in polyvinyl alcohol (PVA) solution to fabricate a proton conducting electrolyte. The SC/PVA (85:15% w/w) film activated with 0.25 M H2SO4 show high ionic conductivity of 2.5 x 10-1 S/cm and specific capacitance of 96 F/g at 25oC. In the charge-discharge curves, a low internal resistance was observed for SC/PVA electrolyte as compared to the acidic solution electrolyte.

Original languageEnglish (US)
Pages (from-to)1869-1874
Number of pages6
JournalEnergy Procedia
Volume75
DOIs
StatePublished - 2015
Event7th International Conference on Applied Energy, ICAE 2015 - Abu Dhabi, United Arab Emirates
Duration: Mar 28 2015Mar 31 2015

Keywords

  • Sulfated cellulose
  • cyclic voltammetry
  • electric double layer capacitor
  • proton conductivity

ASJC Scopus subject areas

  • Energy(all)

Fingerprint Dive into the research topics of 'Sulfated Cellulose/Polyvinyl Alcohol Composites as Proton Conducting Electrolyte for Capacitors'. Together they form a unique fingerprint.

Cite this