Abstract
By use of the membrane-templated synthesis route, hydrous RuO2 (RuO2.xH2O) nanotubular arrayed electrodes were successfully synthesized by means of the anodic deposition technique. The desired three-dimensional mesoporous architecture of RuO2.xH2O nanotubular arrayed electrodes with annealing in air at 200 degrees C for 2 h simultaneously maintained the facility of electrolyte penetration, the ease of proton exchange/diffusion, and the metallic conductivity of crystalline RuO2, exhibiting unexpectedly ultrahigh power characteristics with its frequency "knee" reaching ca. 4.0-7.8 kHz, 20-40 times better than that of RuO2 single crystalline, arrayed nanorods. The specific power and specific energy of annealed RuO2.xH2O nanotubes measured at 0.8 V and 4 kHz is equal to 4320 kW kg-1 and 7.5 W h kg-1, respectively, demonstrating the characteristics of next generation supercapacitors.
Keywords
SupercapacitorMaterials scienceElectrolyteElectrodeNanorodAnodeMesoporous materialNanotechnologyAnnealing (glass)Chemical engineeringConductivityElectrochemistryComposite materialChemistry
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Publication Info
- Year
- 2006
- Type
- article
- Volume
- 6
- Issue
- 12
- Pages
- 2690-2695
- Citations
- 1713
- Access
- Closed
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Cite This
Chi‐Chang Hu,
Kuo‐Hsin Chang,
Ming-Champ Lin
et al.
(2006).
Design and Tailoring of the Nanotubular Arrayed Architecture of Hydrous RuO<sub>2</sub> for Next Generation Supercapacitors.
Nano Letters
, 6
(12)
, 2690-2695.
https://doi.org/10.1021/nl061576a
Identifiers
- DOI
- 10.1021/nl061576a