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19 results on '"Liu, Lingxin"'

17. 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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19. Facile synthesis of Cu3V2O7(OH)2.2H2O as cathode for primary lithium batteries.

Author

Tang, Yan, Zhou, Jiang, Liu, Jing, Liu, Lingxin, Li, Yejing, and Liang, Shuquan

Subjects
*COPPER compounds synthesis, *CATHODES, *LITHIUM cells, *X-ray diffraction, *CRYSTALLINITY, *NANOPARTICLES, *ELECTROCHEMISTRY
Abstract

Cu3V2O7(OH)2·2H2O materials have been synthesized by a facile hydrothermal route without any templates. The XRD results showed that the as-prepared materials are of high crystallinity and high purity. The Cu3V2O7(OH)2·2H2O material prepared at 190°C for 12h is composed of a large quantity of well-separated nanoparticles with the diameters ranging from 50nm to 200nm. The results of electrochemical measurement indicate that the Cu3V2O7(OH)2·2H2O material exhibits high initial discharge capacity and high-rate capability. A high specific discharge capacity of 544, 503, 475, 458 and 429mAhg−1 can be achieved at different current densities of 10, 20, 30, 50 and 100mAg−1, respectively. The superior electrochemical properties suggest that they are a promising cathode material for implantable cardioverter defibrillators (ICDs). [ABSTRACT FROM AUTHOR]

Published
2013
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