超声波法制备球形Li_3PO_4粉末

Synthesis of Spherical Li_3PO_4 Powders by Ultrasonic Waves

为了制备锂离子电池正极材料球形LiFePO4,以曲拉通-100(Tx-100)作表面活性剂,用超声波法制备了LiFePO4的前驱体材料μm级球形Li3PO4粉末,并用X射线衍射进行了表征.研究了各种因素对Li3PO4颗粒形态的影响,得到了超声波法制备球形Li3PO4粉末的适宜条件:反应温度为35℃,Li+的浓度为0.6 mol/L,Tx-100的质量百分数为10%,超声波作用时间为5 min.

In order to prepare spherical LiFePO4 as cathode material for Lithium ion battery, the micron-grade spherical Li3PO4 powders as LiFePO4 precursor were synthesized by ultrasonic waves using Tx-100 as the surfactant. The components of Li3PO4 were confirmed by X-ray diffraction. The optimum condition of synthesizing spherical Li3PO4 powders was obtained by researching the effects of the diversified factors on the appearance of Li3PO4 powders. The condition was as follws, the reaction temperature was 35℃, Li^＋ concentration was 0.6 mol/L, the mass fraction of Tx-100 was 10%, and the reaction time was 5 min.