中文摘要：

以NaCI为熔剂，采用熔盐法制备了锂离子正极材料LiNi0.7n03O2，通过X射线衍射光谱法（XRD）、扫描电子显微镜法（SEM）及充放电曲线测试对材料结构、形貌以及对应的电化学性能进行了表征。结果表明：在熔盐与产物摩尔比例为4,温度850℃下保温8h时，可得到晶格发育较好、阳离子混排度低的正极材料，该材料在2．75～4．2V电压范围内0．2C充放电,首次放电比容量达180mAh／g左右，循环50次后，比容量约保持在160mAh／g。而850℃下保温6h合成的材料晶粒较小但不均匀，具有最大的首次放电比容量，其放电平台较窄,应用受限。

英文摘要：

The compound LiNi0.71Mn0.3O2 was successfully prepared by molten salt synthesis route using NaCI. They were characterized by X-ray diffraction, SEM, and the charge-discharge cycling. The results show that the sample synthesizing at 850 ℃ for 8 h, the lattJce of the sample developed more complete, and the cationic mixed degree was low, so it still had the good electrochemical performance. In initial charge-discharge, the discharge specific capacity could be up to about 180 mAh/g in 2.75 V to 4.2 V voltage range in 0.2 C current and contained 160 mAh/g after 50 cycle times. But for 6 h in the molten salt R=4 at 850 ℃ had the greatest discharge specific capacity, but the platform was narrow and limited application.