中文摘要：

通过共沉淀结合水热处理法，合成了不同金属离子（Al3＋、zn2＋）掺杂的正极材料氢氧化镍[Ni（OH）2]。用XRD测试分析样品的结构，用恒流充放电、循环伏安及交流阻抗等测试研究样品的电化学性能。单独掺杂Zn“，得到以β-Ni（OH）：结构为主的电极材料；单独掺杂A13＋或共同掺杂A13＋和Zn2＋，可以获得a—Ni（OH）2的结构。共同掺杂A13＋和zn的Ni（OH）2＋，循环稳定性好，单个镍原子交换的电子数多，最大为1．93个，且电荷转移和质子扩散阻力小。

英文摘要：

Cathode materials hydroxide [ Ni （OH） 2 ] doped by different metal ions （ A13 , Zn2 ） were synthesized by coprecipitation combined with hydrothermal treatment method. The structure of the sample was analyzed by XRD test, the electrochemical perfor- mance of the sample was studied by galvanostatic charge-discharge, cyclic voltammetry and A. C. impedance tests. The obtained electrode material was mainly/-Ni（OH） 2 structure when only doping Zn2 ,while ot-Ni（OH） 2 structure was obtained by only doping A13 or co-doping A13 ＋ and Zn2 ＋. Ni（OH） 2 co-doped A13 ＋ and Zn2 had fine cycle stability, high number of exchanged electrons per nickel atom（ the maximum was 1.93 ） ,small charge-tranfer and proton-diffusion resistance.