Modification of nickel sulfide by surface coating with TiO2 and ZrO2 for improvement of cycle capability

Tomonari Takeuchi, Hikari Sakaebe, Hiroyuki Kageyama, Katsumi Handa, Tetsuo Sakai, Kuniaki Tatsumi

研究成果: ジャーナルへの寄稿学術誌査読

13 被引用数 (Scopus)

抄録

TiO2 - and ZrO2 -coated nickel sulfide (NiS) were prepared for the improvement of cycle capability in rechargeable lithium batteries with liquid electrolytes. The cells with the TiO2 -coated NiS showed improved cycle performance as compared with those of the noncoated NiS. This improvement was attributable to the improved structural reversibility of the active materials with Li+ insertion/extraction reactions, which might be due to the stabilization of the active materials by TiO2, and also attributable to the suppression of sulfur dissolution in the liquid electrolytes. ZrO2 coating on the NiS surface was not effective for improving the cyclability of the cells, which was attributable to the increase in the amount of metallic Ni clusters, not contributing to the electrochemical redox reactions, when charging.

本文言語英語
ページ(範囲)A958-A966
ジャーナルJournal of the Electrochemical Society
156
11
DOI
出版ステータス出版済み - 2009
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 再生可能エネルギー、持続可能性、環境
  • 表面、皮膜および薄膜
  • 電気化学
  • 材料化学

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