Multi-channel-contained few-layered MoSe 2 nanosheet/N-doped carbon hybrid nanofibers prepared using diethylenetriamine as anodes for high-performance sodium-ion batteries

Sun Young Jeong, Subrata Ghosh, Jae Kwang Kim, Dong Won Kang, Sang Mun Jeong, Yun Chan Kang, Jung Sang Cho

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A facile new strategy for the synthesis of multi-channel-contained N-doped carbon nanofibers composed of few-layered MoSe 2 nanosheets (denoted as MC-NCNF/MoSe 2 ) was introduced and the composite was demonstrated as an anode material for sodium-ion batteries. This was the first time that diethylenetriamine was introduced as a pore generator in the electrospinning process and played a key role in generating multi-channels in the structure by phase-separation from the molybdenum salt and subsequent volatilization without any additional process. Polyvinylpyrrolidone was used as a carbon precursor and played the role of a N-doping source for the carbon matrix. MC-NCNF/MoSe 2 achieved a high reversible discharge capacity of 386 mA h g −1 at a current density of 0.5 A g −1 after the 300th cycle and superior rate capability of 285 mA h g -1 at 10.0 A g −1 . The multi-channeled structure of MC-NCNF/MoSe 2 facilitated effective Na + and electron diffusion during repeated discharge/charge processes and accommodated the huge volume expansion of the MoSe 2 nanosheets induced by electrochemical reaction of the Na + ion.

Original languageEnglish
Pages (from-to)100-107
Number of pages8
JournalJournal of Industrial and Engineering Chemistry
Volume75
DOIs
Publication statusPublished - 2019 Jul 25

Keywords

  • Anodes
  • Electrospinning
  • Molybdenum diselenide
  • Multi-channel
  • Nanofibers
  • Sodium ion batteries

ASJC Scopus subject areas

  • Chemical Engineering(all)

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