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11. Electrochemical performance of AlV3O9 nanoflowers for lithium ion batteries application.

Author

Huang, Boyun, Liu, Lingxin, Fang, Guozhao, Zhou, Jiang, Cai, Kangning, and Liang, Shuquan

Subjects
*VANADATES, *CATHODE efficiency, *LITHIUM-ion batteries, *ELECTROCHEMICAL analysis, *IONIC conductivity
Abstract

We report the fabrication of the AlV 3 O 9 nanoflowers, which is then used as cathode and anode materials for high-performance lithium ion batteries. The existence of Al 3+ in the vanadium oxygen interlayers reduces electrochemical impedance and improves lithium ion diffusion coefficient of aluminum vanadates, resulting in the enhanced electrochemical performance. Electrochemical measurements show that the AlV 3 O 9 nanoflowers demonstrate good electrochemical performance as cathode and anode materials. Specially, the anode performance of aluminum vanadate is evaluated for the first time. A high capacity of 843 mA h g −1 for second cycle at 100 mA g −1 is obtained for AlV 3 O 9 anode. Even cycled at 1000 mA g −1 , it can maintain a high capacity of 295 mA h g −1 up to 500 cycles. The good performance of AlV 3 O 9 nanoflowers may be ascribed to their 3D hierarchical structure and the conductivity improvement by the incorporation of aluminum ions. [ABSTRACT FROM AUTHOR]

Published
2017
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