Synthesis and electrochemical properties of single-crystalline LiV3O8 nanorods as cathode materials for rechargeable lithium batteries
Synthesis and electrochemical properties of single-crystalline LiV3O8 nanorods as cathode materials for rechargeable lithium batteries
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DOI：
10.1016/j.jpowsour.2009.03.066
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发表时间：
2009-07
影响因子：
9.2
通讯作者：
Haimei Liu;Yonggang Wang;Kaixue Wang;Yarong Wang;Haoshen Zhou
中科院分区：
文献类型：
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作者：
Haimei Liu;Yonggang Wang;Kaixue Wang;Yarong Wang;Haoshen Zhou
利用自制的VO2(B)纳米棒作为钒源，结合方便的固相反应制备了一维（1D）纳米棒的liv3o8单晶。通过XRD、TEM和SEM对所得的liv3o8纳米棒进行了表征，结果表明该材料是高度结晶的单相材料。研究了作为可充电锂电池正极材料的liv3o8纳米棒的电化学性能，结果表明，在20mAg−1电流密度下，制备的liv3o8纳米棒在第一次循环时的放电容量高达348mAhg−1，在50mAg−1电流密度下仍保持在303mAhg−1；此外，在50个循环中，他们保持315mAhg−1，记录为50mAg−1。这些结果表明，单晶一维纳米棒是极有前途的可充电锂电池正极材料。
One-dimensional (1D) nanorods of LiV3O8single crystals have been fabricated by using well-defined home-made VO2(B) nanorods as the vanadium resource, combined with a convenient solid-state reaction. The as-obtained LiV3O8nanorods were characterized by XRD, TEM and SEM, indicating this material was highly crystalline and a single phase. The electrochemical performance of LiV3O8nanorods as the positive electrode material for rechargeable lithium batteries was investigated, which demonstrated that as-prepared LiV3O8nanorods exhibited as high as 348mAhg−1discharge capacity in first cycle at 20mAg−1current density, and still remained at 303mAhg−1at 50mAg−1afterwards; moreover, until 50 cycles, they kept 315mAhg−1, recorded at 50mAg−1. All these results imply that single-crystalline 1D nanorods of LiV3O8are promising cathode material for rechargeable lithium batteries.