Controlling the Nanostructure of RuO[sub 2]/Carbon Nanotube Composites by Gas Annealing
- 1 January 2005
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 152 (2) , D23-D25
- https://doi.org/10.1149/1.1847672
Abstract
We fabricated RuO2/carbonRuO2/carbon nanotube (CNT) composites by coating the CNTs with an amorphous RuOxRuOx layer using metallorganic chemical vapor deposition followed by postannealing at a relatively low temperature of 350°C. It was found that the kind of gas used during the postannealing process should affect the nanostructure of the RuO2/CNTRuO2/CNT composites quite significantly. Starting with a thin RuOxRuOx coating layer, we could obtain relatively uniform-sized spherical and elliptical RuO2RuO2 nanoparticles by using Ar and O2O2 gas, respectively, during the postannealing. The growth behaviors of the RuO2RuO2 nanoparticles could be explained in terms of surface self-diffusion. The surface diffusion process can provides a way to fabricate RuO2/CNTRuO2/CNT nanocomposites with a controllable geometrical shape and size, whose process can be used for diverse applications, such as high-performance supercapacitor electrodes, electrocatalysts, gas sensors, and new electrodevices. © 2004 The Electrochemical Society. All rights reserved.Keywords
This publication has 14 references indexed in Scilit:
- Ruthenium Oxide Nanotube Arrays Fabricated by Atomic Layer Deposition Using a Carbon Nanotube TemplateAdvanced Materials, 2003
- Interface energy of Au7Si grown in the interfacial layer of truncated hexagonal dipyramidal Au nanoislands on polycrystalline-siliconApplied Physics Letters, 2003
- Instability Driven Fragmentation of Nanoscale Fractal IslandsPhysical Review Letters, 2002
- Fidgety particles on surfaces: how do they jump, walk, group, and settle in virgin areas?Surface Science, 2002
- Synthesis of metal oxide nanorods using carbon nanotubes as templatesJournal of Materials Chemistry, 2000
- Electronic connection to the interior of a mesoporous insulator with nanowires of crystalline RuO2Nature, 2000
- The decoration of carbon nanotubes by metal nanoparticlesJournal of Physics D: Applied Physics, 1996
- Proton Insertion into Ruthenium Oxide Film Prepared by Pulsed Laser DepositionJournal of the Electrochemical Society, 1996
- Hydrous Ruthenium Oxide as an Electrode Material for Electrochemical CapacitorsJournal of the Electrochemical Society, 1995
- Carbon nanotubes as removable templates for metal oxide nanocomposites and nanostructuresNature, 1995