The structure and electrochemical performance of LiFeBO3 as a novel Li-battery cathode material
The structure and electrochemical performance of LiFeBO3 as a novel Li-battery cathode material
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DOI：
10.1016/j.electacta.2007.09.050
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发表时间：
2008
影响因子：
6.6
通讯作者：
Y. Dong;Yanming Zhao;Z. Shi;X. An;P. Fu;Leilei Chen
中科院分区：
文献类型：
--
作者：
Y. Dong;Yanming Zhao;Z. Shi;X. An;P. Fu;Leilei Chen
LiFeBO3cathode material has been synthesized successfully by solid-state reaction using Li2CO3, H3BO3and FeC2O4·2H2O as starting materials. The crystal structure has been determined by the X-ray diffraction. Electrochemical tests show that an initial discharge capacity of about 125.8mAh/g can be obtained at the discharge current density of 5mA/g. When the discharge current density is increased to 50mA/g, the specific capacity of 88.6mAh/g can still be held. In order to further improve the electrochemical properties, the carbon-coated LiFeBO3, C-LiFeBO3, are also prepared. The amount of carbon coated on LiFeBO3particles was determined to be around 5% by TG analysis. In comparison with the pure LiFeBO3, a higher discharge capacity, 158.3mAh/g at 5mA/g and 122.9mAh/g at 50mA/g, was obtained for C-LiFeBO3. Based on its low cost and reasonable electrochemical properties obtained in this work, LiFeBO3may be an attractive cathode for lithium-ion batteries.
