Design and tailoring of the nanotubular arrayed architecture of hydrous RuO2 for next generation supercapacitors

被引：1643

作者：

Hu, Chi-Chang ^{[1
]}

Chang, Kuo-Hsin ^{[1
]}

Lin, Ming-Champ ^{[1
]}

Wu, Yung-Tai ^{[1
]}

机构：

[1] Natl Chung Cheng Univ, Dept Chem Engn, Lab Electrochem & Adv Mat, Chiayi 621, Taiwan

来源：

NANO LETTERS | 2006年 / 6卷 / 12期

关键词：

D O I：

10.1021/nl061576a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

By use of the membrane-templated synthesis route, hydrous RuO2 (RuO2 center dot xH(2)O) nanotubular arrayed electrodes were successfully synthesized by means of the anodic deposition technique. The desired three-dimensional mesoporous architecture of RuO2 center dot xH(2)O 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 center dot xH(2)O 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.

引用

页码：2690 / 2695

页数：6

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