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Citation: YANG Hui, LI Juan. Preparation and Properties of LiV₃O₈ Nanomaterials as Cathode Material for Li-ion Batteries[J]. Chinese Journal of Applied Chemistry, ;2009, 26(8): 989-992. shu

Preparation and Properties of LiV₃O₈ Nanomaterials as Cathode Material for Li-ion Batteries

YANG Hui ^a,b ,
LI Juan ^a,,

1.
a Institute of Applied Chemistry, Xinjiang University, Urumqi 830046;
2.
b Xinjiang Joinworld company, Urumqi

Corresponding author: LI Juan,
Received Date: 28 July 2008
Available Online: 23 October 2008
Fund Project: 国家自然科学基金(20663006) (20663006)新疆自治区高校科研计划项目(XJEDU2006S206)资助项目 (XJEDU2006S206)

LiV₃O₈ cathode nanomaterials were synthesized by a hydrothermal route at different reaction temperatures.The structures,morphologies and proprieties of the samples were investigated by XRD,TEM,galvanostatic charge-discharge,cyclic voltammetry(CV),and electrochemical impedance spectroscopy(EIS) techniques.With increase of hydrothermal temperature,the diameter of the particles increased,the size distribution became inhomogeneous,and the charge transfer resistance of the LiV₃O₈ electrode was decreased,which is of benefit to strip and insert of lithium-ion during the charging-discharging process.The sample synthesized at a hydrothermal temperature 180 ℃ has the highest discharge capacity and a good reversibility.Its specific discharge capacity is up to 290 mA·h/g in a range of 1.8~3.8 V in the first cycle.After 30 cycles,the discharge capacity of this electrode material is still above 200 mA·h/g.That is to say,there is some defect-amorphous in the structure of the materials,and there is a certain dimensional distributing of the particles,which can improve the electrochemical performances of the LiV₃O₈ cathode nanomaterials.
- lithium-ion batteries,
- LiV₃O₈,
- nanomaterials,
- hydrothermal method
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Preparation and Properties of LiV₃O₈ Nanomaterials as Cathode Material for Li-ion Batteries