کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
193864 | 459779 | 2008 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: 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](/preview/png/193864.png)
LiFeBO3 cathode material has been synthesized successfully by solid-state reaction using Li2CO3, H3BO3 and 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 125.8 mAh/g can be obtained at the discharge current density of 5 mA/g. When the discharge current density is increased to 50 mA/g, the specific capacity of 88.6 mAh/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 LiFeBO3 particles was determined to be around 5% by TG analysis. In comparison with the pure LiFeBO3, a higher discharge capacity, 158.3 mAh/g at 5 mA/g and 122.9 mAh/g at 50 mA/g, was obtained for C-LiFeBO3. Based on its low cost and reasonable electrochemical properties obtained in this work, LiFeBO3 may be an attractive cathode for lithium-ion batteries.
Journal: Electrochimica Acta - Volume 53, Issue 5, 1 January 2008, Pages 2339–2345