Flux growth of hexagonal cylindrical LiCoO2 crystals surrounded by Li-ion conducting preferential facets and their electrochemical properties studied by single-particle measurements

N. Zettsu, K. Nishikawa, K. Yubuta, K. Sakurai, Y. Yamamoto, Y. Mizuno, S. Oishi, K. Teshima

研究成果: Contribution to journalArticle査読

15 被引用数 (Scopus)

抄録

In this study, we demonstrate the template-mediated flux growth of one-dimensional LiCoO2 single crystals surrounded by {104} faces in a hot solution of LiCl-KCl. The reaction and growth processes were characterized by time-dependent X-ray diffraction and scanning electron microscopy. The transformation in the crystal shape from rectangular to hexagonal cylindrical was considered to be directly related to the gradual lithiation of the starting CoO whiskers. Single particle galvanostatic tests of the single-strand LiCoO2 crystals were carried out. The LiCoO2 crystals exhibited excellent rate performance and more than 65% of the full capacity was maintained under ca. 370C. These characteristics likely resulted from the exposure of the {104} faces, since they were electrochemically active in layered LiCoO2 with an α-NaFeO2 structure and favored fast Li+ transportation. This finding will facilitate the development of new materials for advanced lithium ion rechargeable batteries.

本文言語英語
ページ(範囲)17016-17021
ページ数6
ジャーナルJournal of Materials Chemistry A
3
33
DOI
出版ステータス出版済み - 6 28 2015
外部発表はい

All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 再生可能エネルギー、持続可能性、環境
  • 材料科学(全般)

フィンガープリント

「Flux growth of hexagonal cylindrical LiCoO<sub>2</sub> crystals surrounded by Li-ion conducting preferential facets and their electrochemical properties studied by single-particle measurements」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル