Nano Archive

Arrayed CNxNT-RuO2 nanocomposites directly grown on Ti-buffered Si substrate for supercapacitor applications

Fang, Wei-Chuan and Chyan, Oliver and Sun, Chia-Liang and Wu, Chien-Ting and Chen, Chin-Pei and Chen, Kuel-Hsien and Chen, Li-Chyong and Huang, Jin-Hua (2006) Arrayed CNxNT-RuO2 nanocomposites directly grown on Ti-buffered Si substrate for supercapacitor applications. ELECTROCHEMISTRY COMMUNICATIONS, 9 (2). pp. 239-244.

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Official URL: http://www.sciencedirect.com/science?_ob=ArticleUR...

Abstract

Significant enhancement in supercapacitor performance has been achieved via a new RUO2 nanocomposite materials prepared by direct ruthenium sputtering on arrayed multi-walled carbon nanotubes supported by Ti-buffered Si wafer. XPS, HRTEM and SAED analyses reveal that as-prepared nanoparticles have a crystalline Ru metal core with RUO2 oxide coating. The nanocomposites convert to RuO2-CNx NTs with subsequent electrochemical cycling. At present, well-dispersed and strongly adhered RuO2 NPs have been densely populated on CNx NTs to obtain the overall specific capacitance (1380 F/g-RuO2) charging-discharging rate (up to 600 mV/s) and operation stability (5000 cycles). Thus, RuO2-CNx NTs nanocomposites would make a promising candidate for use in next-generation high efficiency miniaturize supercapacitors directly fabricated on Si substrate.

Item Type:Article
Uncontrolled Keywords:supercapacitors; direct growth; well-aligned carbon nanotubes; RuO2 nanoparticles; arrayed nanocomposites
Subjects:Material Science > Functional and hybrid materials
Technology > Nanotechnology and energy applications
ID Code:3194
Deposited By:Anuj Seth
Deposited On:26 May 2009 10:28
Last Modified:26 May 2009 10:28

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