Natural graphite enhanced the electrochemical performance of Li3V2(PO4)3 cathode material for lithium ion batteries

被引：17
|
作者：
Zhang, Lu-Lu [1 ,2 ]
Sun, Hua-Bin [1 ]
Yang, Xue-Lin [1 ]
Li, Ming [1 ]
Li, Zhen [1 ]
Ni, Shi-Bing [1 ]
Tao, Hua-Chao [1 ]
机构：
[1] China Three Gorges Univ, Hubei Prov Collaborat Innovat Ctr New Energy Micr, Coll Mat & Chem Engn, 8 Daxue Rd, Yichang 443002, Hubei, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Ceram, CAS Key Lab Mat Energy Convers, Shanghai 200050, Peoples R China
来源：
JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2016年 / 20卷 / 02期
基金：
美国国家科学基金会;
关键词：
Lithium vanadium phosphate; Natural graphite; Cathode material; Lithium ion battery; SOL-GEL METHOD; COMPOSITES; CHALLENGES; PHASE;
D O I：
10.1007/s10008-015-3044-z
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Natural graphite treated by mechanical activation can be directly applied to the preparation of Li3V2(PO4)(3). The carbon-coated Li3V2(PO4)(3) with monoclinic structure was successfully synthesized by using natural graphite as carbon source and reducing agent. The amount of activated graphite is optimized by X-ray diffraction, scanning electron microscope, transmission electron microscope, Raman spectrum, galvanostatic charge/discharge measurements, cyclic voltammetry, and electrochemical impedance spectroscopy tests. Our results show that Li3V2(PO4)(3) (LVP)-10G exhibits the highest initial discharge capacity of 189 mAh g(-1) at 0.1 C and 162.9 mAh g(-1) at 1 C in the voltage range of 3.0-4.8 V. Therefore, natural graphite is a promising carbon source for LVP cathode material in lithium ion batteries.
引用
收藏
页码：311 / 318
页数：8
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