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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 | Schools: | School of Civil and Environmental Engineering School of Materials Science and Engineering |
Organisations: | TUM CREATE Centre for Electromobility | Research Centres: | Energy Research Institute @ NTU (ERI@N) | Fulltext Permission: | none | Fulltext Availability: | No Fulltext |
Appears in Collections: | CEE Journal Articles ERI@N Journal Articles MSE Journal Articles |
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