中文摘要：

晶态氢氧化镍[Ni（OH）2]在碱性电解液中易发生相变，影响其电化学性能。文中采用微乳液快速冷冻共沉淀法制备Nd3＋和Cu2＋复合掺杂非晶态纳米Ni（OH）：粉体材料，并对其结构形貌及物理特性进行表征分析。结果表明，制备出的非晶态Ni（OH）2样品材料，微结构含有较多结晶水，物相近似球形，粒径大小在20-30nm。对样品电极材料的电化学性能测试发现，掺杂Nd3＋和Cu2＋的摩尔比为2：1时，所制备的样品材料合成镍电极，并组装成MH—Ni模拟电池，在恒电流80mA／g下充电6h，40mA／g放电，终止电压为1．0V的充放电条件下，放电比容量高达348．0mA·h／g，放电中值电压为1．2723V，同时样品电极材料的氧化还原可逆性较好，电极过程的电化学阻抗较小。电化学性能优于目前MH—Ni生产应用的晶态β—Ni（OH）2电极材料。

英文摘要：

The crystalline nickel hydroxide is easily phase-changed in alkalescent electrolyte and its electrochemical performances are affected. The Nd3 ＋ and Cu2 ＋ -codoped material of amorphous nano-Ni（OH） 2 was prepared by the method of rapid freezing precipitation of micro-emulsion. The structure and physical characteristics of the samples were characterized. The results show that the sample powder synthesized by this method is amorphous, which contains a large amount of crystal water and its shape is similar to spherical shape with the average particle size of 20-30 nm. The electrochemical performances of this electrode material were also studied. When the mole ratio of Nd3＋ to Cu2＋ was 2 ： 1, the sample powder was prepared as the nickel electrode material, and then assembled into the MH-Ni simulation battery. Under the conditions that it is charged at 80 mA/g for 6 h and discharged at 40 mA/g to the final voltage 1.0 V, the discharge specific capacity is as high as 348.0 mA · h/g, and the middle discharge voltage is 1. 272 3 V; the circle reversibility is good and the electrochemical impedance in the electrochemical reaction is small. The electrochemical performances of this samples are much better than those of β-Ni（OH） 2 applied in MH-Ni production.