A carbon-free ruthenium oxide/mesoporous titanium dioxide electrode for lithium-oxygen batteries

Jin Bum Park, Ilias Belharouak, Yun Jung Lee, Yang Kook Sun

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Mesoporous TiO<inf>2</inf> with well-distributed RuO<inf>2</inf> catalysts is considered in this paper as a carbon-free cathode material replacement. Benefiting from the highly-porous TiO<inf>2</inf> support structure and high catalytic activity of RuO<inf>2</inf>, the Li-O<inf>2</inf> cells with composite RuO<inf>2</inf>/mesoporous TiO<inf>2</inf> cathodes show low charge potentials with a high cell capacity. The stability of the TiO<inf>2</inf> materials was verified by investigating stable cell performance as well as through structural and chemical characterization via X-ray diffraction and X-ray photoelectron spectroscopy. This study demonstrates the possibility of achieving high energy at the cell level, free of carbon instability.

Original languageEnglish
Pages (from-to)299-304
Number of pages6
JournalJournal of Power Sources
Volume295
DOIs
Publication statusPublished - 20 Jul 2015

Keywords

  • Carbon-free electrode
  • Catalyst
  • Lithium-oxygen batteries
  • Ruthenium dioxide
  • Titanium dioxide

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Physical and Theoretical Chemistry

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