Design and Tailoring of the Nanotubular Arrayed Architecture of Hydrous RuO2 for Next Generation Supercapacitors

Autor:	Yung-Tai Wu, Ming-Champ Lin, Kuo-Hsin Chang, Chi-Chang Hu
Rok vydání:	2006
Předmět:	Supercapacitor Materials science business.industry Mechanical Engineering Bioengineering Nanotechnology General Chemistry Electrolyte Condensed Matter Physics Anode Electrode Optoelectronics Specific energy General Materials Science Nanorod Mesoporous material business Power density
Zdroj:	Nano Letters. 6:2690-2695
ISSN:	1530-6992 1530-6984
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38ca5c02005710005f309c07af762936 https://doi.org/10.1021/nl061576a Zobrazit plný text záznamu