A novel fiber bundle structure ZnCo sub(2)O sub(4) as a high capacity anode material for lithium-ion battery

A novel fiber bundle nanostructured ZnCo sub(2)O sub(4) (ZCO) is prepared by a typical and facile co-precipitation method using oxalic acid as complex agent. XRD, SEM, and TEM analyses show the as-prepared ZCO crystals have a high purity and a good crystallinity, and the ZCO nanowires with a diamete...

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Bibliographic Details
Published in:Journal of alloys and compounds 2014-09, Vol.606, p.219-225
Main Authors: Song, Xiong, Ru, Qiang, Mo, Yudi, Hu, Shejun, An, Bonan
Format: Article
Language:English
Subjects:
Alloys
Anodes
Bundling
Coprecipitation
Fibers
Lithium batteries
Lithium-ion batteries
Nanostructure
Oxalic acid
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Summary:A novel fiber bundle nanostructured ZnCo sub(2)O sub(4) (ZCO) is prepared by a typical and facile co-precipitation method using oxalic acid as complex agent. XRD, SEM, and TEM analyses show the as-prepared ZCO crystals have a high purity and a good crystallinity, and the ZCO nanowires with a diameter of 10-30 nm are composed of uniform ZCO nanocrystals with a size of 30-60 nm. The novel structure with enough free space is beneficial to improving the electrochemical performance. The as-prepared ZCO fiber bundle used as an anode material for lithium-ion batteries exhibits a high specific capacity of 1026.3 mAhg super(-1) at a current rate of 100 mA g super(-1) after 100 cycles, as well as a high power capability at elevated current rates, i.e., 1015.1 and 606.2 mA h g super(-1) at current rates of 500 and 2000 mA g super(-1), respectively. It has a great prospect for the application of anode materials for lithium-ion batteries.
ISSN:0925-8388
DOI:10.1016/j.jallcom.2014.03.190