LiV₃O₈/Ag composite nanobelts with enhanced performance as cathode material for rechargeable lithium batteries

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• 作者：Shuquan Liang ; Jiang Zhou ; Guozhao Fang ; Xilin Li ; Anqiang Pan ; Jun Wu ; Yan Tang ; Jing Liu
• 关键词：Lithium trivanadate ; Silver nanoparticles ; Nanobelt ; High-rate ; Rechargeable lithium batteries
• 刊名：Journal of Alloys and Compounds
• 出版年：15 January, 2014
• 年：2014
• 卷：583
• 期：Complete
• 页码：351-356
• 全文大小：2292 K

文摘

Ag nanoparticles anchored LiV₃O₈ nanobelts have been synthesized via a facile sol-gel route. The as-prepared thin LiV₃O₈/Ag composite nanobelts have a thickness of several nanometers and a length of dozens of micrometers. The EDX result confirms the existence of Ag element in LVO/Ag composite and the uniform dispersion of Ag nanoparticle among the LVO/Ag composite. When it is evaluated as a cathode material for lithium batteries, the LiV₃O₈/Ag composite nanobelts exhibit excellent rate capability and long-term cyclic stability. A maximum specific discharge capacity of 247, 214, 175, 149, 124, 113 and 103 mA h g^鈭? is achieved at the current densities of 50, 100, 300, 500, 1000, 1500 and 2000 mA g^鈭?, respectively. It exhibits no capacity fading after 250 cycles at the current density of 1 A g^鈭?. The superior electrochemical performance indicates their promising application as cathode material in lithium ion batteries.