Nitrogen-doped carbon nanotubes as cathode for lithium-air batteries

  • Yongliang Li
  • , Jiajun Wang
  • , Xifei Li
  • , Jian Liu
  • , Dongsheng Geng
  • , Jinli Yang
  • , Ruying Li
  • , Xueliang Sun*
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Nitrogen-doped carbon nanotubes (N-CNTs) were synthesized by a floating catalyst chemical vapor deposition (FCCVD) method. Various techniques including X-ray photoelectron spectroscopy, field emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and Raman spectroscopy revealed the morphology and structure of CNTs and N-CNTs as well confirmed the existence of incorporated nitrogen (10.2 at.%) in N-CNTs. N-CNTs were investigated as cathode material for lithium-air batteries and exhibited a specific discharge capacity of 866 mAh g- 1, which was about 1.5 times as that of CNTs. Our results indicated that the N-CNTs electrode showed high electrocatalytic activities for the cathode reaction thus improving the lithium-air battery performance.

Original languageEnglish
Pages (from-to)668-672
Number of pages5
JournalElectrochemistry Communications
Volume13
Issue number7
DOIs
StatePublished - Jul 2011
Externally publishedYes

Keywords

  • Electrocatalytic activity
  • Lithium-air batteries
  • Nitrogen-doped carbon nanotubes

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