表面活性剂辅助水热合成钼酸镧钠负极材料及性能研究

Performance of Sodium Lanthanum Molybdate Anode Prepared by Surfactant-assisted Hydrothermal Synthesis

通过表面活性剂辅助水热合成了钼酸镧钠负极材料,利用X射线衍射(XRD)、傅里叶变换红外光谱(FTIR)、循环伏安(CV)测试等对样品结构和电化学性能进行了研究.结果表明,与pH=10相比,pH=6时制备的钼酸镧钠负极材料具有更好的电化学性能,其在电流密度为0.1 A/g时,容量可达356.7 mAh/g,循环后库伦效率接近100%.

The sodium lanthanum molybdate anode materials were prepared by surfactant-assisted hydrothermal synthesis.The structure and electrochemical performance of samples were investigated by X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FTIR) and cyclic voltammetry(CV) test.The results showed that the sodium lanthanum molybdate anode material prepared at pH=6 had better electrochemical performance than that prepared at pH=10.At a current density of 0.1 A/g, its capacity could reach 356.7 mAh/g, and the coulombic efficiency after cycling was close to 100 %.