摘要
采用沉淀转化法制备出纳米级Ni(OH) 2 ,研究了干燥温度对材料团聚程度和电化学循环伏安性能的影响。XRD和TEM测试结果表明 :所制备的材料为纳米级 β Ni(OH) 2 ,晶粒尺寸在 10～ 10 0nm之间。干燥温度对纳米级Ni(OH) 2 的团聚程度有较大影响 ,并可以在一定程度上控制材料的密度。循环伏安测试表明 :适当团聚的纳米级Ni(OH) 2 比微米级的具有更优越的电化学循环伏安性能 ,其质子扩散系数也较大。
Nano-scale Ni(OH)_2 was prepared by precipitate transformation method. The effects of drying temperature on the agglomeration and electrochemical cyclic voltammetry of nano-scale Ni(OH)_2 were investigated. The measurement results of XRD and TEM indicate that the nano-scale Ni(OH)_2 prepared is β -phase and the grain size is in the rang of 10～100 nm. Drying temperature has a great influence on the agglomeration degree of nano-scale Ni(OH)_2 and thus can also control the density of nano-scale Ni(OH)_2 within a certain extent. Cyclic voltammetry(CV) experiments show that the nano-scale ()Ni(OH)_2 with suitable agglomeration degree has better electrochemical CV parameters and proton diffusion coefficient than micron-scale (Ni(OH)_2.)
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2003年第5期1125-1129,共5页
The Chinese Journal of Nonferrous Metals
基金
国家自然科学基金资助项目 (2 0 2 710 15 )
广东省新型电池重大专项基金资助项目 (A110 2 0 1)
