The electrochemical performance of Ni-added Li3V2(PO4)3/graphene composites as cathode material for Li-ion batteries

被引：7
作者：
Choi, Mansoo [1 ,2 ]
Kim, Hyun-Soo [1 ]
Lee, Young Moo [2 ]
Jin, Bong-Soo [1 ]
机构：
[1] Korea Electrotechnol Res Inst, Battery Res Ctr, Chang Won 642120, South Korea
[2] Hanyang Univ, Dept Energy Engn, Seoul 133791, South Korea
来源：
MATERIALS LETTERS | 2015年 / 145卷
关键词：
Lithium vanadium phosphate; Graphene nano-powder; Nickel; Electrical conductivity; Li-ion battery; RECHARGEABLE LITHIUM BATTERIES; VANADIUM PHOSPHATE; ANODE MATERIAL; TEMPERATURE;
D O I：
10.1016/j.matlet.2015.01.087
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ni-added Li3V2(PO4)(3)/graphene (Li3V2-xNix(PO4)(3), x=0.1, 0.2, and 03, LVNP) was easily synthesized by a facile sol-gel method. The addition of a graphene and Ni in Li3V2(PO4)(3) (LVP) showed the high crystallinity and influenced the morphology of the LVP particles. The effect of the addition of graphene and Ni was investigated in physical and electrochemical properties. Compared with the pristine LVP, the LVNP composite delivered a higher discharge capacity of 180 mA h g(-1) at 0.1 C-rate and better rate capability in the potential range of 3.0-4.8 V. The electrochemical impedance spectra (EIS) measurement, the resistance of LVP electrode was reduced, which can ensure the high specific capacity and rate capability. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：83 / 86
页数：4
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