中文摘要：

以乙酸镍、乙酸锰为原料，碳酸氢钠为沉淀剂，利用共沉淀法制备了镍锰碳酸盐前驱体，并在还原气氛中通过控制还原法制备了具有不同Mn/Ni摩尔比的球形MnO@Ni负极材料，并对其成分、形貌和元素分布及电化学性能进行表征。结果表明：通过在MnO体相中均匀掺入合适比例的高导电性金属镍，可以有效地提高锂离子电池负极材料MnO的电化学性能。Mn/Ni摩尔比为1：10时MnO@Ni负极材料5C放电比容量为214.3 mA·h/g，0.5C循环200次容量保持率为72%，呈现出高的倍率性能和循环保持率。

英文摘要：

Nickel and manganese carbonate precursors were synthesized by a co-precipitation route with nickel acetate and manganese acetate as raw materials and sodium bicarbonate as a precipitant. Via controlled reduction of the precursors, the spherical MnO@Ni composite anode materials with different Mn/Ni molar ratios were prepared. The crystal structure, morphology and chemical composition as well as electrochemical performance of the samples were characterized. The results show that modification of impregnating metallic Ni in MnO materials can effectively improve the electrochemical performance of MnO anode materials for lithium ion batteries. The composite anode material with Mn/Ni molar ratio of 1：10 exhibits a superior performance： rate capability of 214.3 mA·h/g at 5C and capacity retention after 200 cycles at 0.5C of 72%.