期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 5, 期 17, 页码 8062-8069出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ta02136d
关键词
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资金
- Fundamental Research Funds for the Central Universities [xjj2015119]
- National Natural Science Foundation of China [51273158, 21303131]
- China Postdoctoral Science Foundation [2016M592776]
- Natural Science Foundation of Shaanxi Province [2016JM5021]
Hybrid carbon-coated transition metal oxides (TMOs@C) offer enhanced lithium storage capabilities, but the facile formation of TMOs@C nanocomposites remains a great challenge. Herein, we report a novel hierarchical hybrid nanostructure of carbon-coated CoFe2O4 twin elliptical frustums (CoFe2O4@C TEFs) via a quick one-pot refluxing reaction in ethylene glycol (EG) followed by an annealing treatment. When evaluated as an anode in lithium-ion batteries (LIBs), the resultant CoFe2O4@C TEF hybrids demonstrate good electrochemical performance with high reversible specific capacity, excellent rate capability and super-long life cycle. After 600 cycles at a current density of 500 mA g(-1), the resultant TEFs still deliver a stable reversible discharge capacity of 875 mA h g(-1). This work demonstrates the extensive potential of such simple synthetic methods towards various carbon coated transition metal oxide composites for energy conversion and storage devices.
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