Title :
Self-assembly of cubic Co3O4 crystals and charge and discharge performances for lithium-ion battery
Author :
Duliang He ; Jun Wang ; Fei Teng ; Mindong Chen ; Yong Wang ; Meng, Deinns D. ; Guiqing Li
Author_Institution :
Jiangsu Key Lab. of Atmos. Environ. Monitoring & Pollution Control, Nanjing Univ. of Inf. Sci. & Technol., Nanjing, China
fDate :
8/1/2012 12:00:00 AM
Abstract :
In this Letter, cubic Co3O4 samples are synthesised by a simple hydrothermal reaction. The samples are characterised by scanning electron microscopy, transmission electron microscopy, electron diffraction, X-ray powder diffractometer and nitrogen adsorption. The results show that the formed Co3O4 samples are not solid cubes, but cube-like assemblies of nanoparticles. The charge and discharge performances of the cubic Co3O4 crystals are investigated. It shows that the Co3O4 cubes have a high-rate capacity and an excellent cyclability, which is attributed to the high-surface area and porous structure.
Keywords :
X-ray diffraction; cobalt compounds; crystal growth from solution; electron diffraction; nanofabrication; nanoparticles; porous materials; scanning electron microscopy; secondary cells; self-assembly; transmission electron microscopy; Co3O4; X-ray powder diffractometer; cube-like assemblies; cubic Co3O4 crystals; discharge performances; electron diffraction; formed Co3O4 samples; hydrothermal reaction; lithium ion battery; nanoparticles; nitrogen adsorption; porous structure; scanning electron microscopy; self-assembly; solid cubes; transmission electron microscopy;
Journal_Title :
Micro & Nano Letters, IET
DOI :
10.1049/mnl.2012.0354
