Synthesis of triaxial LiFePO4 nanowire with a- VGCF core column and a carbon shell through the electrospinning method

Eiji Hosono, Yonggang Wang, Noriyuki Kida, Masaya Enomoto, Norimichi Kojima, Masashi Okubo, Hirofumi Matsuda, Yoshiyasu Saito, Tetsuichi Kudo, Itaru Honma, Haoshen Zhou

Research output: Contribution to journalArticlepeer-review

102 Citations (Scopus)

Abstract

A triaxial LiFePO4 nanowire with a multi wall carbon nanotube (VGCF:Vapor-grown carbon fiber) core column and an outer shell of amorphous carbon was successfully synthesized through the electrospinning method. The carbon nanotube core oriented in the direction of the wire played an important role in the conduction of electrons during the charge-discharge process, whereas the outer amorphous carbon shell suppressed the oxidation of Fe2+. An electrode with uniformly dispersed carbon and active materials was easily fabricated via a single process by heating after the electrospinning method is applied. Mössbauer spectroscopy for the nanowire showed a broadening of the line width, indicating a disordered coordination environment of the Fe ion near the surface. The electrospinning method was proven to be suitable for the fabrication of a triaxial nanostructure.

Original languageEnglish
Pages (from-to)212-218
Number of pages7
JournalACS Applied Materials and Interfaces
Volume2
Issue number1
DOIs
Publication statusPublished - 2010 Jan 27
Externally publishedYes

Keywords

  • Electrospinning method
  • Lifepo
  • Lithium ion battery
  • Nanostructure control
  • Nanowires
  • Positive materials

ASJC Scopus subject areas

  • Materials Science(all)

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