期刊
NEW JOURNAL OF CHEMISTRY
卷 39, 期 3, 页码 1943-1952出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4nj01535e
关键词
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资金
- Scientific Research and Cultivating Fund of Young Teachers in South China Normal University
- National Science Foundation of China (NSFC) [51201066, 51171065]
- Natural Science Foundation of Guangdong Province [S2012020010937, 10351063101000001]
- Foundation for Distinguished Young Talents in Higher Education of Guangdong [2012LYM_0048]
- ARC [FT100100134]
ZnFe2O4 with inflorescence spicate architecture has been synthesized by a facile co-precipitation method with the presence of oxalic acid. The ZnFe2O4 as an anode material with novel morphological structure was emphasized by X-ray diffraction (XRD), Fourier transform infrared spectra (FT-IR), Raman spectroscopy and so on. As an anode for LIBs, the inflorescence spicate ZnFe2O4 exhibits excellent electrochemical performance with an initial discharge capacity of 1647.2 mA h g(-1), maintaining a reversible discharge capacity of 1398.1 mA h g(-1) after 100 cycles at a current density of 100 mA g(-1) (84.9% of the first discharge capacity) and favorable rate capacity (766 mA h g(-1) at 1.2 A g(-1)). Such attractive performance is ascribed mainly to its unique inflorescence spicate electrode morphology, which can provide good electrical contact and conductivity, and provide a buffer medium to accommodate the volume expansion of electrode materials during the electrochemical reaction process. More importantly, this study not only provides a simple synthesis method for lithium-ion batteries, but also helps in designing novel electrode materials with high performance.
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