Article Title

Shape control of CoO and LiCoO₂ nanocrystals

Authors

Dingsheng Wang, Department of Chemistry and State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China
Xiaoling Ma, Department of Chemistry and State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China
Yanggang Wang, Department of Chemistry and State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China
Li Wang, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 102201, China
Zhongying Wang, Department of Chemistry and State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China
Wen Zheng, Department of Chemistry and State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China
Xiangming He, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 102201, China
Jun Li, Department of Chemistry and State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China
Qing Peng, Department of Chemistry and State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China
Yadong Li, Department of Chemistry and State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China

Keywords

CoO, LiCoO2, nanocrystals, lithium-ion batteries

Abstract

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 LiCoO₂ 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 LiCoO₂ nanocrystals showed different electrochemical performance depending on their morphology, indicating that Li-insertion/deintercalation dynamics might be crystal face-sensitive.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-010-1001-9

Publisher

Tsinghua University Press

Recommended Citation

Dingsheng Wang,Xiaoling Ma,Yanggang Wang,Li Wang,Zhongying Wang,Wen Zheng,Xiangming He,Jun Li,Qing Peng,Yadong Li, Shape control of CoO and LiCoO2 nanocrystals. NanoRes.2010, 3: 1–7