TiO2-entrained tubular carbon nanofiber and its electrochemical properties in the rechargeable Na-ion battery system

Yuzo Ohata, Jumi Yun, Ryohei Miyamae, Taegon Kim, Jandee Kim, Min Hyun Seo, Ayuko Kitajo, Jin Miyawaki, Shigeto Okada, Seong Ho Yoon

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Well-defined "peapod" nano-carbon structure of TiO2 nanoparticles entrained tubular carbon nanofiber with nano-gate channels (TNG-TCNF) was first designed and fabricated through the simple low-temperature impregnation of titanium tetrachloride to tubular carbon nanofiber with nano-gate channels (NG-TCNF) for the application as an effective anode material for Na-ion batteries. Many nano-gated channels on the NG-TCNF walls effectively facilitated the deposition of TiO2 nanoparticles inside its tube. The maximum entrained mass ratio of the TiO2 nanoparticles in the NG-TCNF was evaluated to 35 wt%. The prepared TiO2 entrained NG-TCNF exhibited remarkable discharge capacity of 120 mAh/g as anode for Na-ion battery with a relatively stable cycle-ability compared to those of bare TiO2, confirming the effective role of gateway for charge/discharge of Na ions.

Original languageEnglish
Pages (from-to)309-314
Number of pages6
JournalApplied Thermal Engineering
Volume72
Issue number2
DOIs
Publication statusPublished - Nov 22 2014

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

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