Shape control of CoO and LiCoO sub(2) nanocrystals

Shape control of nanocrystals has become a significant subject in materials science. In this work, we describe a convenient way to achieve morphology-controllable synthesis of CoO nanocrystals including octahedrons and spheres as well as LiCoO sub(2) polyhedrons and spheres. In particular, we explai...

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Published inNano research Vol. 3; no. 1; pp. 1 - 7
Main Authors Wang, Dingsheng, Ma, Xiaoling, Wang, Yanggang, Wang, Li, Wang, Zhongying, Zheng, Wen, He, Xiangming, Li, Jun, Peng, Qing, Li, Yadong
Format Journal Article
LanguageEnglish
Published 01.01.2010
Subjects
Crystals
Mathematical analysis
Nanocomposites
Nanocrystals
Nanomaterials
Nanostructure
Octahedrons
Shape control
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Summary:Shape control of nanocrystals has become a significant subject in materials science. In this work, we describe a convenient way to achieve morphology-controllable synthesis of CoO nanocrystals including octahedrons and spheres as well as LiCoO sub(2) polyhedrons and spheres. In particular, we explain the formation of CoO octahedrons exposing only high-energy (111) facets using theoretical calculations; these should also be a useful tool for directing future face-controlled preparation of other nanocrystals. More importantly, the as-obtained LiCoO sub(2) nanocrystals showed different electrochemical performance depending on their morphology, indicating that Li-insertion/deintercalation dynamics might be crystal face-sensitive.
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ISSN:1998-0124
1998-0000
DOI:10.1007/s12274-010-1001-9