Zn^(2+)、Al^(3+)替代纳米α相氢氧化镍制备正交试验研究

Study on orthogonal test for fabrication of nanometer Zn^(2+)、Al^(3+) substituted nickel hydroxide

本文采用多离子替代制备出纳米α-Ni(OH)2电极材料。XRD测试表明其晶型为α型,TEM观察表明粒子形状不规则,大小在20-30 nm左右。通过对Zn2+、Al3+离子替代量,表面活性剂种类,阴离子种类和反应温度的正交试验优化,得出最佳的工艺参数,并合成出质量电化学容量为316 mA·h/g的电极材料(相同制备工艺得到的日本田中化学球镍电极容量仅为220 mA·h/g)。

Nano-scale α-phase nickel hydroxide electrode materials were fabricated by multi-ion substitution. XRD test indicates that the crystal is α-style and TEM shows that the particles are between 20 and 30 nanometers in size with an irregular shape. Optimum technological parameters are obtained through orthogonal test of the substitution quantities of A13+ ions , Zn2+ ions, categories of anions , surfactants and reaction temperature. By using the optimized technological parameters, electrode materials with electrochemical capacity of 316 mA·h/g are prepared.