期刊
CRYSTENGCOMM
卷 16, 期 44, 页码 10227-10234出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ce01277a
关键词
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资金
- National Natural Science Foundation [51072072, 51272095, 51172032]
- European Union Marie Curie FP7-IRSES project [295208]
The self-assembly of cobalt coordination frameworks (Co-CPs) with a two-dimensional morphology is demonstrated by a solvothermal method. The morphology of the Co-CPs has been controlled by various solvothermal conditions. The two-dimensional nanostructures agglomerated by Co3O4 nanoparticles remained after the pyrolysis of the Co-CPs. The as-synthesized Co3O4 anode material is characterized by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and galvanostatic charge-discharge measurements. The morphology of Co3O4 plays a crucial role in the high performance anode materials for lithium batteries. The Co3O4 nanoparticles with opened-book morphology deliver a high capacity of 597 mA h g(-1) after 50 cycles at a current rate of 800 mA g(-1). The opened-book morphology of Co3O4 provides efficient lithium ion diffusion tunnels and increases the electrolyte/Co3O4 contact/interfacial area. At a relatively high current rate of 1200 mA g(-1), Co3O4 with opened-book morphology delivers an excellent rate capability of 574 mA h g(-1).
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