Electrocatalytic performance of CuO/graphene nanocomposites for Li-O2 batteries

Da Sol Kim, Gwang Hee Lee, Seun Lee, Jae Chan Kim, Hack Jun Lee, Byung Kook Kim, Dong-Wan Kim

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A hybrid catalyst system of a porous CuO nanowire/leaf mixture anchored onto graphene (p-CuO/G hybrid) was prepared as an oxygen-electrode electrocatalyst for lithium-oxygen (Li-O2) batteries. The p-CuO/G hybrid was prepared via the hybridization of a porous 1D/2D CuO mixture with 2D graphene. As an oxygen-electrode electrocatalyst for Li-O2 cells, the p-CuO/G hybrid exhibited high reversibility with a low voltage gap compared with a graphene electrode during 120 discharge-charge cycles under a fixed capacity regime of 1000 mA h g-1. We demonstrated the oxygen reduction and evolution kinetics of the p-CuO/G hybrid using electrochemical impedance spectroscopy.

Original languageEnglish
JournalJournal of Alloys and Compounds
DOIs
Publication statusAccepted/In press - 2016 Jul 31

Keywords

  • CuO
  • Electrocatalyst
  • Graphene
  • Li-O batteries
  • Oxygen electrode

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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