Dehydrated Sucrose Nanoparticles as Spacers for Graphene-Ionic Liquid Supercapacitor Electrodes

David J. Bozym, Sibel Korkut, Michael A. Pope, Ilhan A. Aksay

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

The addition of dehydrated sucrose nanoparticles increases the gravimetric capacitance of electrochemical double-layer capacitor electrodes produced via the evaporative consolidation of graphene oxide-water-ionic liquid gels by more than two-fold. Dehydrated sucrose adsorbs onto graphene oxide and serves as a spacer, preventing the graphene oxide from restacking during solvent evaporation. Despite 61 wt % of the solids being electrochemically inactive dehydrated sucrose nanoparticles, the best electrodes achieved an energy density of ∼13.3 Wh/kg, accounting for the total mass of all electrode components.

Original languageEnglish (US)
Pages (from-to)7167-7174
Number of pages8
JournalACS Sustainable Chemistry and Engineering
Volume4
Issue number12
DOIs
StatePublished - Dec 5 2016

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Renewable Energy, Sustainability and the Environment

Keywords

  • Energy density
  • Room-temperature ionic liquid
  • Spacer
  • Sucrose
  • Supercapacitor

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