Transition metal (Fe, Co, Ni) nanoparticles on selective Amino-N-doped carbon as high-performance oxygen reduction reaction electrocatalyst

Seonghee Kim, Shuhei Kato, Takahiro Ishizaki, Oi Lun Li, Jun Kang

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Metal-air batteries are attracting increasing attention as a superior renewable energy conversion device due to their high performance and strong potential. However, the high cost and low stability of the current Pt catalyst is the main obstacle preventing wide industrial application. In this work, we applied a plasma process to fabricate aniline and a transition metals electrode (Fe, Co, Ni) as the carbon-nitrogen and the metal nanoparticle (NP) precursors, respectively, for selective metal/amino-N-doped carbon catalysts. All three as-synthesized catalysts exhibited dominant amino-N as the major C–N bonding state. In electrochemical testing, Co/amino-N-doped carbon showed positive E1/2 potential (0.83 V vs. Reversible Hydrogen Electrode (RHE)). In addition, the calculated electron transfer number (n) of Co/amino-N-doped carbon at 0.5 V vs. RHE was 3.81, which was only slightly less than that of commercial Pt/C (3.97). This superior performance of transition metal/amino-N-doped carbon promotes it as an economical oxygen reduction reaction (ORR) electrocatalyst to replace expensive Pt/C in metal-air batteries.

Original languageEnglish
Article number742
JournalNanomaterials
Volume9
Issue number5
DOIs
Publication statusPublished - 2019 May

Keywords

  • Metal-nitrogen-hybrid catalyst
  • Nitrogen-doped carbon
  • Oxygen reduction reaction
  • Selective amino-N doping
  • Transitional metal nanoparticles

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)

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