Synthesis and electrochemistry of new layered (1 - x)LiVO2·xLi2TiO3 (0 ≤ x ≤ 0.6) electrode materials

Lianqi Zhang, Kazunori Takada*, Narumi Ohta, Minoru Osada, Takayoshi Sasaki

*この研究の対応する著者

研究成果: Article査読

20 被引用数 (Scopus)

抄録

Novel electrode materials with nominal compositions of (1 - x)LiVO2·xLi2TiO3 (0 ≤ x ≤ 0.6) were synthesized by carbothermal reduction reaction. All the materials were identified to have a layered structure and can be considered as a solid solution related to LiVO2-Li2TiO3 system, in which Li layers was alternately stacked with the layers made of mixture of Li, V, and Ti in a ccp array of oxygen. The redox reaction associated with vanadium ions was not reversible in LiVO2; however, introduction of the redox couple into Li2TiO3 made it much more reversible. A reversible capacity of about 120 mAh g-1 remained after 90 cycles for the samples with x = 0.5 and 0.6, when they were cycled in the voltage range of 1.0-4.8 V.

本文言語English
ページ(範囲)1007-1011
ページ数5
ジャーナルJournal of Power Sources
174
2
DOI
出版ステータスPublished - 2007 12 6
外部発表はい

ASJC Scopus subject areas

  • 電気化学
  • 燃料技術
  • 材料化学
  • エネルギー(その他)

フィンガープリント

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