Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/106568
Title: Template-free synthesis of urchin-like Co3O4 hollow spheres with good lithium storage properties
Authors: Lim, Tuti Mariana
Rui, Xianhong
Tan, Huiteng
Sim, Daohao
Liu, Weiling
Xu, Chen
Hng, Huey Hoon
Yazami, Rachid
Yan, Qingyu
Keywords: DRNTU::Engineering::Materials
Issue Date: 2013
Source: Rui, X., Tan, H., Sim, D., Liu, W., Xu, C., Hng, H. H., et al. (2013). Template-free synthesis of urchin-like Co3O4 hollow spheres with good lithium storage properties. Journal of power sources, 222, 97-102.
Series/Report no.: Journal of power sources
Abstract: Hierarchical urchin-like hollow spheres (5–8 μm in diameter) assembled by one-dimensional nanowires consisting of many interconnected Co3O4 nanoparticles (10–50 nm) are successfully synthesized. Co(CO3)0.5(OH)·0.11H2O precursors are firstly prepared by a hydrothermal process. The morphological evolution process of Co(CO3)0.5(OH)·0.11H2O hollow urchin precursors is investigated and a plausible mechanism is proposed. Then, the Co(CO3)0.5(OH)·0.11H2O are converted to Co3O4 through heat treatment in air. As an anode material for lithium ion batteries, urchin-like Co3O4 hollow spheres exhibit highly reversible specific capacities, good cycling stabilities and excellent rate capabilities (e.g., 433 mAh g−1 at 10 C). The superior performances result from the synergetic effect of integral urchin-like microstructure, small diffusion lengths in the nanoparticle building blocks and sufficient void space to buffer the volume expansion.
URI: https://hdl.handle.net/10356/106568
http://hdl.handle.net/10220/17760
ISSN: 0378-7753
DOI: 10.1016/j.jpowsour.2012.08.094
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:CEE Journal Articles
ERI@N Journal Articles
MSE Journal Articles

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