摘要
采用均匀络合共沉淀法 ,利用不同的镍盐合成出了球形 β Ni(OH ) 2 ,并首次研究了不同镍盐合成出的球形β Ni(OH) 2 电化学性能的差异及存在这些差异的原因。通过对其充放电特性及循环伏安特性的研究 ,发现由不同镍盐合成的Ni(OH) 2 其电化学性能有较大差别 ,用NiSO4 制得的Ni(OH) 2 放电比容量较高 ,循环寿命较好 ,平台电位也高于用Ni(NO3 ) 2 合成的Ni(OH) 2 。分别对其原粉和放电中、后期样品进行X射线衍射 (XRD)和傅立叶变换红外 (FTIR)图谱分析 。
Spherical β Ni(OH) 2 was prepared from different nickel salt by homogeneous complexing precipitation method. The differences between their charge/discharge and cyclic voltammetry properties and the reasons of the differences were studied for the first time. There are much differences in electrochemical properties of the prepared Ni(OH) 2.The specific capacity, cycle life and the discharging plateau of the material prepared from NiSO 4 were superior to those of the material prepared from Ni(NO 3) 2. The raw materials were studied by XRD and FTIR measurements before, during and after charge/discharge process. The reason of the differences were analyzed theoretically.
出处
《电源技术》
CAS
CSCD
北大核心
2001年第4期286-288,共3页
Chinese Journal of Power Sources
基金
国家自然科学基金资助项目 (2 9981 0 0 2 )
