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为了改进三聚钒酸锂作为锂离子电池正极材料的电化学性能,以LiNO3、LiCl和NH4VO3作为反应原料,通过一种简单的低温熔盐合成方法(LT-MSS)在250℃温度条件下制备得到带状LiV3O8纳米材料.X射线衍射(XRD)和X射线光电子能谱(XPS)分析结果表明所得产物为单斜相LiV3O8.扫描电镜(SEM)、透射电镜(TEM)和高分辨透射电镜(HRTEM)照片显示该产物为单晶纳米带形貌,沿[001]方向生长.电化学测试表明该产物储锂量高,循环性能良好.实验结果表明采用低温熔盐合成法制备LiV3O8能够有效提高所得产物的结构、形貌和电化学性能.
In order to improve the electrochemical performance of lithium tri-vanadate as a cathode material for lithium-ion batteries, LiNO3, LiCl and NH4VO3 were prepared by a simple low temperature molten salt synthesis (LT-MSS) at 250 ℃ The results of X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) show that the obtained product is monoclinic LiV3O8. SEM, TEM and high resolution transmission electron microscopy HRTEM) photographs show that the product is single crystal nanoribbon morphology and grows in the direction of [001] .The electrochemical tests show that the product has high lithium storage capacity and good cycle performance.The experimental results show that LiV3O8 can be effectively improved by low temperature molten salt synthesis The resulting product structure, morphology and electrochemical properties.