Catalytic behavior of V2O5 in rechargeable Li-O 2 batteries

Sung Hoon Lim, Bok Ki Kim, Woo Young Yoon

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The possibility of using vanadium pentoxide (V2O5) as a catalyst in rechargeable lithium-oxygen (Li-O2) batteries was studied. A V2O5-carbon composite was cast onto Ni foam to form a cathode. Electrochemical cells designed based on the flat cell manufactured by Hohsen Corporation were fabricated. The initial discharge capacity was 715 mA h g-1, and the maximum discharge capacity reached 2,260 mA h g-1 during the twelfth cycle. The cell had high capacity retention during cycling (1.24 % during cycles 2-8). V2O5 acted as a catalyst as well as an active material, improving the specific capacity and capacity retention of the non-aqueous Li-O2 cell more effectively than do other materials.

Original languageEnglish
Pages (from-to)1045-1048
Number of pages4
JournalJournal of Applied Electrochemistry
Volume42
Issue number12
DOIs
Publication statusPublished - 2012 Dec 1

Keywords

  • Catalyst
  • Lithium-air battery
  • Lithium-oxygen battery
  • Vanadium pentoxide

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry
  • Materials Chemistry

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