Three different kinds of MCo2 O4 （ M = Mn, Zn, Cu） were obtained via hydrothermal route. The crystalline phases and the morphology of the prepared samples were characterized by X-ray diffraction （ XRD ） and transmission electron microscopy （TEM）, respectively. XRD figures showed that the obtained samples have spinel structure. The particles sizes of the resulting samples were in the range of 11-17, 16-23 and 22-26 nm. The electrochemical performance of MCo2 O4 （M = Mn, Zn, Cu） as the anod for lithium ion batteries was tested. It shows that the first discharge capacities of the batteries can reach a very high value of 1448, 1534 and 1509 mA · h · g-1, respectively. The reaction mechanism between lithium and cobaltite was also discussed based on the results of cyclic vohammograms. All the results reveal that the nano-cobaltite particles obtained from the hydrothermal method are expected to be a promising anode material for applications in lithium ion batteries.%采用水热法制备出了3种不同的纳米级钴酸盐MCo2O4（M=Mn，Zn，Cu）．产物的晶型、形貌分别通过x一射线粉末衍射（XRD）和透射电子显微镜（TEM）进行表征．XRD结果表明，3种钴酸盐均属立方晶系，具有尖晶石结构；TEM结果表明，3种钴酸盐均为纳米级颗粒，粒径分别为11～17、16—23和22～26nm．将其作为锂离子电池负极材料进行了恒电流测试，其初始放电容量分别高达1448、1534和1509mA·h·g-1．利用循环伏安法对其反应机理做了初步的探讨．充放电结果说明水热法合成出的纳米级钴酸盐有望成为锂离子电池负极材料．
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