Binary lithium titanate–titania nanocomposite thin-film electrodes for electrochemical energy storage

Zhaozhe Yu, Huarui Xu, Guisheng Zhu, Dong Liang Yan, Aibing Yu

Research output: Contribution to journalArticleResearchpeer-review

3 Citations (Scopus)

Abstract

This work introduces a facile approach for preparation of binary nanocomposite thin film electrodes for lithium-ion batteries with excellent storage capability, high rate performance, and good electrochemical stability. The Li4Ti5O12-TiO2 film electrodes are prepared by radio frequency (RF) magnetron sputtering deposition using a Li4Ti5O12 and TiO2 powder mixture target as sputtering source in an argon atmosphere. The Li4Ti5O12–TiO2 electrode yields good electrochemical performance in terms of high capacity (295 mAh g−1) at a current density of 0.1 C, good cycling stability (≈5 % capacity loss after 100 cycles at 0.1 C), and excellent rate capability (158 mAh g−1 at a current density of 5 C). The factors contributing to the excellent electrochemical performance are related to the binary nanocomposite structure. The results suggest that the Li4Ti5O12–TiO2 nanocomposite thin film can be used as an anode material for high-performance lithium-ion batteries.

Original languageEnglish
Pages (from-to)798-803
Number of pages6
JournalEnergy Technology
Volume4
Issue number7
DOIs
Publication statusPublished - 1 Jul 2016

Keywords

  • charge storage
  • composites
  • intercalation
  • lithium-ion batteries
  • thin films

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