Oxidized iridium nanodendrites as catalysts for oxygen evolution reactions

Woong Hee Lee, Hansung Kim

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)

Abstract

Iridium nanodendrites were synthesized using tetradecyltrimethyl ammonium bromide (TTAB) as an organic capping agent, and the electrocatalytic activity toward oxygen evolution reaction (OER) was evaluated. X-ray photoelectron spectroscopy revealed that an anodically grown iridium oxide film was created on the Ir dendrite through a repeated potential sweep between 0.04 and 1.54 V vs. SHE. The highly branched structure of the Ir dendrites with a particle size of ∼ 10 nm provides an increased active facet area that is available for OER in comparison to a commercial Ir catalyst, resulting in enhanced activity toward OER.

Original languageEnglish
Pages (from-to)408-411
Number of pages4
JournalCatalysis Communications
Volume12
Issue number6
DOIs
Publication statusPublished - 2011 Feb 10

Bibliographical note

Funding Information:
This work was supported by the Priority Research Centers Program through the National Research Foundation of Korea (2009-0093823) and the National Research Foundation of Korea (NRF-2009-0092926), funded by the Ministry of Education, Science and Technology.

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Process Chemistry and Technology

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