Fabrication and supercapacitive properties of a thick electrode of carbon nanotube-RuO2 core-shell hybrid material with a high RuO2 loading

Fang, Hai-Tao, Liu, Min, Wang, Da-Wei, Ren, Xiao-Hui and Sun, Xue (2013) Fabrication and supercapacitive properties of a thick electrode of carbon nanotube-RuO2 core-shell hybrid material with a high RuO2 loading. Nano Energy, 2 6: 1232-1241. doi:10.1016/j.nanoen.2013.05.012

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Author Fang, Hai-Tao
Liu, Min
Wang, Da-Wei
Ren, Xiao-Hui
Sun, Xue
Title Fabrication and supercapacitive properties of a thick electrode of carbon nanotube-RuO2 core-shell hybrid material with a high RuO2 loading
Journal name Nano Energy
ISSN 2211-2855
2211-3282
Publication date 2013
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.nanoen.2013.05.012
Open Access Status
Volume 2
Issue 6
Start page 1232
End page 1241
Total pages 10
Place of publication Amsterdam, The Netherlands
Publisher Elsevier BV
Collection year 2014
Language eng
Subject 2105 Renewable Energy, Sustainability and the Environment
2500 Materials Science
2208 Electrical and Electronic Engineering
Abstract A core-shell hybrid material of amorphous hydrous RuO2-coated carbon nanotubes (CNT-RuO2) with a RuO2 loading as high as 82.4wt% was prepared by a solution method using RuCl3 and NaHCO3 aqueous solutions. The effect of preparation conditions, especially the dripping speed of the NaHCO3 solution, on the formation of the core-shell structure was investigated, and the corresponding mechanism was discussed. Supercapacitive properties of the CNT-RuO2 and amorphous hydrous RuO2 electrodes with a thickness of over 200μm were studied and the crucial factors to govern their rate capability were analyzed. For the thick CNT-RuO2 electrode, a comparison of its specific capacitance before and after subtracting the effect of the voltage drop of discharge curves caused by the inner resistance of the CNT-RuO2 symmetrical supercapacitor indicates that electronic conductivity is more important than proton diffusion in determining its rate capability.
Keyword Carbon nanotube
Core shell hybrid material
Ruthenium oxide
Supercapacitor
Thick electrode
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
Australian Institute for Bioengineering and Nanotechnology Publications
 
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