Cited time in webofscience Cited time in scopus

Synthesis and supercapacitor performance of Au-nanoparticle decorated MWCNT

Title
Synthesis and supercapacitor performance of Au-nanoparticle decorated MWCNT
Author(s)
Chaudhari, Kiran N.Chaudhari, SudeshnaYu, Jong-Sung
Issued Date
2016-01
Citation
Journal of Electroanalytical Chemistry, v.761, pp.98 - 105
Type
Article
Author Keywords
Au-decorated CNTelectrochemical capacitorsupercapacitornon-faradic reaction
Keywords
CARBON NANOTUBESCyclic VoltammetryElectrocatalystsElectrochemical CapacitorElectrochemical Impedance SpectroscopyElectrochemical Impedance Spectroscopy MeasurementsElectrochemical PerformanceElectrodeElectrode MaterialElectrolytic CapacitorsENERGY-STORAGE APPLICATIONSGalvanostatic Charge/DischargeGOLDGold AlloysGOLD NANOPARTICLESMETALMETALSMultiwalled Carbon Nanotubes (MWCN)NanocompositesNANOPARTICLESNon-Faradic ReactionOxygen Reduction ReactionParticle SizeSchottky Barrier DiodesSpecific CapacitanceSuper CapacitorSupercapacitorSynthesis (Chemical)WALLED CARBON NANOTUBESYarnActivated CarbonAu-Decorated CntCapacitanceCapacitorsCarbon
ISSN
1572-6657
Abstract
Au-multiwall carbon nanotube (Au-MWCNT) composites with well-dispersed Au-nanoparticles (NPs) are prepared using a simple and efficient solution method and applied as electrode materials for electrochemical capacitors. Au NP loading is varied, and electrochemical performance of the Au-MWCNT composites is investigated using cyclic voltammetry (CV), galvanostatic charge/discharge and electrochemical impedance spectroscopy (EIS) measurements. Au NP decoration boosts the supercapacitor performance of the Au-MWCNT composite compared with bare MWCNTs. Composite with lower loading of 10 wt% Au loading displays higher specific capacitance (105 F g - 1) compared with bare MWCNTs (48 Fg - 1) at a current density of 0.8 A g- 1, demonstrating that the Au NP decoration significantly enhances the supercapacitor performance of the composite despite no participation of Au in faradic reaction. By varying the metal loading of the composites, it is revealed that lower metal loading with smaller particle size is more effective in enhancing the capacitance behavior of the composites compared with ones with higher metal loading. This behavior is mostly related to the interactions that take place at metal-graphitic interface which may include lowering of Schottky barriers and work function of the metal. © 2015 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/2302
DOI
10.1016/j.jelechem.2015.12.020
Publisher
Elsevier
Related Researcher
  • 유종성 Yu, Jong-Sung
  • Research Interests Materials chemistry; nanomaterials; electrochemistry; carbon and porous materials; fuel cell; battery; supercapacitor; sensor and photochemical catalyst
Files in This Item:

There are no files associated with this item.

Appears in Collections:
Department of Energy Science and Engineering Light, Salts and Water Research Group 1. Journal Articles

qrcode

  • twitter
  • facebook
  • mendeley

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE