Li3V2(PO4)3 cathode material synthesized by chemical reduction and lithiation method

被引：58
作者：
Zheng, Jun-Chao [1 ]
Li, Xin-Hai [1 ]
Wang, Zhi-Xing [1 ]
Guo, Hua-Jun [1 ]
Hu, Qi-Yang [1 ]
Peng, Wen-Jie [1 ]
机构：
[1] Cent S Univ, Sch Met Sci & Engn, Changsha 410083, Peoples R China
来源：
JOURNAL OF POWER SOURCES | 2009年 / 189卷 / 01期
关键词：
Li3V2(PO4)(3) cathode; Chemical reduction; Lithiation; Electrochemical performance; LITHIUM-ION BATTERIES; SOL-GEL ROUTE; ELECTROCHEMICAL PERFORMANCE; TEMPERATURE; LIMNPO4;
D O I：
10.1016/j.jpowsour.2008.12.044
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The monoclinic-type Li3V2(PO4)(3) cathode material was synthesized via calcining amorphous Li3V2(PO4)(3) obtained by chemical reduction and lithiation of V2O5 using oxalic acid as reducer and lithium carbonate as lithium source in alcohol solution. The amorphous Li3V2(PO4)(3) precursor was characterized by using TG-DSC and XPS. The results showed that the V5+ was reduced to V3+ by oxalic acid at ambient temperature and pressure. The prepared Li3V2(PO4)(3) was characterized by XRD and SEM. The results indicated the Li3V2(PO4)(3) powder had good crystallinity and mesoporous morphology with an average diameter of about 30 nm. The pure Li3V2(PO4)(3) exhibits a stable discharge capacity of 130.08 mAh g(-1) at 0.1 C (14 mA g(-1)). (C) 2008 Elsevier B.V. All rights reserved.
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收藏
页码：476 / 479
页数：4
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