通过在 LiMn(2)O(4) 空心微球阴极表面包覆一层 LiNi(0.5)Mn(1.5)O(4) 来提高其电化学性能。
Enhancing the electrochemical performance of the LiMn(2)O(4) hollow microsphere cathode with a LiNi(0.5)Mn(1.5)O(4) coated layer.
机构信息
Key Laboratory of Low Dimensional Materials, Application Technology, Ministry of Education, Faculty of Materials, Optoelectronics and Physics, Xiangtan University, Xiangtan 411105 (China).
出版信息
Chemistry. 2014 Jan 13;20(3):824-30. doi: 10.1002/chem.201303675. Epub 2013 Dec 11.
Spinel cathode materials consisting of LiMn2 O4 @LiNi0.5 Mn1.5 O4 hollow microspheres have been synthesized by a facile solution-phase coating and subsequent solid-phase lithiation route in an atmosphere of air. When used as the cathode of lithium-ion batteries, the double-shell LiMn2 O4 @LiNi0.5 Mn1.5 O4 hollow microspheres thus obtained show a high specific capacity of 120 mA h g(-1) at 1 C rate, and excellent rate capability (90 mAhg(-1) at 10 C) over the range of 3.5-5 V versus Li/Li(+) with a retention of 95 % over 500 cycles.
尖晶石阴极材料由 LiMn2 O4 @LiNi0.5 Mn1.5 O4 中空微球组成，通过在空气气氛中采用简便的溶液相涂层和随后的固相反锂化路线合成。当用作锂离子电池的阴极时，所得的双层 LiMn2 O4 @LiNi0.5 Mn1.5 O4 中空微球在 1 C 率下具有 120 mA h g(-1)的高比容量，并且在 3.5-5 V 相对于 Li/Li(+)的范围内具有优异的倍率性能（10 C 时为 90 mAh g(-1)），在 500 次循环中保持 95%。
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