Synthesis and lithium intercalation properties of Li3VO4 as a new anode material for secondary lithium batteries
Synthesis and lithium intercalation properties of Li3VO4 as a new anode material for secondary lithium batteries
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DOI：
10.1016/j.jpowsour.2013.01.163
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发表时间：
2013-12-15
影响因子：
9.2
通讯作者：
Song, Jun Ho
中科院分区：
文献类型：
--
作者：
Kim, Won-Tae;Jeong, Yeon Uk;Song, Jun Ho
研究了Li 3VO 4作为新型锂离子电池负极材料的嵌锂性能。采用两步加热法和溶液法在氧气气氛中成功合成了单相Li 3VO 4粉体。VO 4和LiO 4四面体共角的结构可以可逆地嵌入锂离子，并在循环后表现出稳定的框架结构。平均放电电位低于Li 4 Ti 5 O 12。而从固相反应得到的样品显示出初始不稳定性，并通过连续循环稳定，通过沉淀合成的样品表现出优异的循环性能。在1.0 C倍率下第100次循环后观察到190 mAh g（-1）的充电容量。(C)2013爱思唯尔有限公司版权所有。
Lithium intercalation properties of Li3VO4 are investigated for a possible application as a new anode material for lithium-ion batteries. A single phase Li3VO4 powders are successfully synthesized in an oxygen atmosphere by a two-step heating process and solution-based method. A structure with corner-shared VO4 and LiO4 tetrahedrons can reversibly intercalate lithium ions and exhibits a stable frame structure after cycling. The average discharge potential is lower than Li4Ti5O12. While the sample obtained from the solid-state reaction shows initial instability and stabilizes by the continuous cycling, the sample synthesized by precipitation exhibits excellent cyclability. 190 mAh g(-1) of charge capacity is observed after 100th cycle at 1.0 C-rate. (C) 2013 Elsevier B.V. All rights reserved.