摘要
采用化学共沉积法制备了Al代α-Ni(OH)_2并对其结构和电化学性能进行了研究。采用XRD,IR,SEM和TGA等方法研究了其结构特征和热稳定性,采用循环伏安法研究了所制备的α-Ni(OH)_2的电化学性能。结果表明:采用25mol％的Al取代的方法得到的晶体结构为α-Ni(OH)_2,且试样可以在碱性溶液中稳定存在。与β-Ni(OH)_2相比,其具有较大的扩散系数,电极反应受扩散控制。
Al-substituted α-Ni(OH)2 was synthesized by chemical co-precipitation and its structure and thermal stability were studied through XRD, IR, SEM and TGA. The electrochemical properties were studied by cyclic voltammetric method. The results show that the 25mol% Al-substituted Ni(OH) 2 is α-Ni(OH)2 and stable in alkali solution. Compared with β-Ni(OH)2, the proton diffusion coefficient for α-Ni (OH)2 prepared in this paper is higher and the electrode reaction is controlled by the diffusion.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2003年第10期825-828,共4页
Rare Metal Materials and Engineering
