Preparation and electrochemical capacitance of ruthenium oxide-titania nanotube composite

Yibing Xie, Li Min Zhou, Chuanjun Huang, Yang Liu, Jian Lu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)

Abstract

A well-aligned titania nanotube array grown on titanium sheet was fabricated by an anodization process in hydrofluoric acid-phosphoric acid-ethylene glycol aqueous electrolyte. Electroactive ruthenium oxide was filled into independent titania nanotubes or deposited on the surface of planar titanium sheet by an electrodeposition-oxidation process. Electrochemical capacitances of these well-designed ruthenium oxides were investigated for supercapacitor applications. Accordingly, ruthenium oxide-titania/titanium (RuO2VTiO2/Ti) nanocomposite exhibits a much higher specific capacitance, power and energy density than ruthenium oxide/titanium (RuO2/Ti) in sulphate acid electrolyte. The utilization efficiency of RuO2is intensively improved by introducing a novel electrode substrate with a nanotube array structure. Such a superior performance of RuO2-TiO2/Ti nanocomposite is ascribed to its highly accessible reaction sites of well-tailored RuO2on TiO2nanotubes.
Original languageEnglish
Title of host publication6th International Forum on Advanced Material Science and Technology, IFAMST 2008
Pages235-241
Number of pages7
DOIs
Publication statusPublished - 30 Sep 2009
Event6th International Forum on Advanced Material Science and Technology, IFAMST 2008 - Hong Kong, Hong Kong
Duration: 12 Jun 200814 Jun 2008

Publication series

NameMaterials Science Forum
Volume614
ISSN (Print)0255-5476

Conference

Conference6th International Forum on Advanced Material Science and Technology, IFAMST 2008
CountryHong Kong
CityHong Kong
Period12/06/0814/06/08

Keywords

  • Electrochemical capacitance
  • Electrodeposition-oxidation synthesis
  • Ruthenium oxide
  • Titania nanotube array

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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