Please use this identifier to cite or link to this item:
|Title:||Thermal formation of mesoporous single-crystal Co3O4 nano-needles and their lithium storage properties|
|Citation:||Lou, X.W., Deng, D., Lee, J.Y., Archer, L.A. (2008). Thermal formation of mesoporous single-crystal Co3O4 nano-needles and their lithium storage properties. Journal of Materials Chemistry 18 (37) : 4397-4401. ScholarBank@NUS Repository. https://doi.org/10.1039/b810093d|
|Abstract:||In this work, we report the simple solid-state formation of mesoporous Co3O4 nano-needles with a 3D single-crystalline framework. The synthesis is based on controlled thermal oxidative decomposition and re-crystallization of precursor β-Co(OH)2 nano-needles. Importantly, after thermal treatment, the needle-like morphology can be completely preserved, despite the fact that there is a large volume contraction accompanying the process: β-Co(OH)2 → Co3O 4. Because of the intrinsic crystal contraction, a highly mesoporous structure with high specific surface area has been simultaneously created. The textual properties can be easily tailored by varying the annealing temperature between 200-400 °C. Interestingly, thermal re-crystallization at higher temperatures leads to the formation of a perfect 3D single-crystalline framework. Thus derived mesoporous Co3O4 nano-needles serve as a good model system for the study of lithium storage properties. The optimized sample manifests very low initial irreversible loss (21%), ultrahigh capacity, and excellent cycling performance. For example, a reversible capacity of 1079 mA h g-1 can be maintained after 50 cycles. The superior electrochemical performance and ease of synthesis may suggest their practical use in lithium-ion batteries. © The Royal Society of Chemistry 2008.|
|Source Title:||Journal of Materials Chemistry|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Mar 14, 2019
WEB OF SCIENCETM
checked on Mar 6, 2019
checked on Feb 1, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.