Lithium nickel -manganese oxide, as an athode material, is with good cycling performance, high capacity, a single high discharge platform. Therefore, many researchers focus on the research of this material of the lithium- battery in recent years. Different synthetic methods and synthetic conditions on the lithium nickel - manganese oxide have a great impact on its morphology and its performance. The solvent- gel, solid- state and molten salt methods were used to synthesis the production. X- ray diffraction (XRD) ,scanning electron microscopy (SEM) test were employed to examine the structure and to study the morphology of the resulted product, thus finding the impactions of synthetic methods to the productionsj morphology and its performance, then find out the best method and conditions for the synthesis of lithium nickel- manganese oxide (LiNi0.5Mn1.5O4 ) in the lithium- ion battery.%锰镍酸锂（LiNi0．5Mn1．5O4）作为正极材料，具有良好的循环性能、较高的容量、高而单一的放电平台．因此，近年来成为电池研究的热点。不同的合成方法以及合成条件对镍锰酸锂的形貌及其性能具有极大的影响。本研究分别采用溶剂凝胶法、固相法、熔融盐法方法合成LiNi0．5Mn1．5O4并通过X-射线衍射、扫描电镜（SEM）、循环伏安法电池性能测试对合成产物的组成、结构、形貌和电化学性能进行表征，进而研究影响产品的性能及形貌的诸多因素，并筛选出较为合适的合成条件以提高锂电池正极材料LiNi0．5Mn1．5O4的电化学性能。
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