Electrospun RuO2-Co3O4hybrid nanotubes for enhanced electrocatalytic activity

Hye Su Jang, Yejin Yang, Nam Suk Lee, Byungrak Son, Youngmi Lee, Chongmok Lee, Myung Hwa Kim

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


We report a facile synthesis of electrospun RuO2-Co3O4hybrid nanotubes as well as their enhanced electrochemical responses. Among all RuO2-Co3O4hybrid nanotubes, the polycrystalline RuO2-Co3O4hybrid nanotubes with optimum relative atomic ratios of Ru/Co=2.3:1.0 show the highly efficient catalytic activity for oxygen reduction reaction (ORR). Additionally, the nanotubes represent the favorable electrochemical sensing behavior for ascorbic acid, resulting in the high sensitivity of 204 μAmM-1cm-2, the low detection limit of 6.6 μM, and the broad dynamic range without the interference from other biological relevant species.

Original languageEnglish
Pages (from-to)405-408
Number of pages4
JournalMaterials Letters
StatePublished - 15 Feb 2015

Bibliographical note

Publisher Copyright:
© 2014 Published by Elsevier B.V.


  • Cobalt oxide
  • Electrochemical sensor for ascorbic acid
  • Electrospinning
  • Oxygen reduction reaction
  • Ruthenium dioxide


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