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A hollow titanium oxynitride nanorod array as an electrode substrate prepared by the hot ammonia-induced Kirkendall effect

Title
A hollow titanium oxynitride nanorod array as an electrode substrate prepared by the hot ammonia-induced Kirkendall effect
Author
방진호
Keywords
CARBON-FIBER PAPER; ELECTROCHEMICAL PERFORMANCE; ULTRAHIGH CAPACITANCE; NICKEL-HYDROXIDE; VISIBLE-LIGHT; SOLAR-CELLS; SPHERES; NITRIDE; STORAGE; SUPERCAPACITORS
Issue Date
2014-07
Publisher
Royal SOC Chemistry
Citation
Journal of Materials Chemistry A, 2014, P.10568-10576
Abstract
The Kirkendall effect has been widely employed for the preparation of hollow nanostructures along with galvanic replacement and Ostwald ripening as a non-templating method. Despite many successful demonstrations for Kirkendall void formation, they have been mostly confined to the synthesis of hollow metal oxides and sulfides. In this work, we explored the feasibility of the Kirkendall effect for the preparation of a nitride compound in an effort to extend its peculiar merits, and discovered a new mechanism of Kirkendall void formation in the synthesis of hollow titanium oxynitride arrays by the nitridation of TiO2. Our in-depth study revealed that the reduction power of hot NH3 played a crucial role in the formation of the Kirkendall void. When employed as an electrode substrate for supercapacitor applications, the hollow titanium oxynitride array showed a superior capacitive performance, which is ascribed to its high electrical conductivity and low density.
URI
http://pubs.rsc.org/en/Content/ArticleLanding/2014/TA/c4ta01469c#!divAbstract
ISSN
2050-7488
DOI
10.1039/C4TA01469C
Appears in Collections:
GRADUATE SCHOOL[S](대학원) > BIONANOTECHNOLOGY(바이오나노학과) > Articles
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