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用六水合硝酸镍为镍源,尿素为沉淀剂,以少量的复合表面活性剂(SDS/P123,CTAB/P123,CTBA/SDS)为模板水热制备了介孔氧化镍。分别采用热重-差示扫描量热(TG-DSC)、傅立叶红外光谱(FTIR)、X射线衍射(XRD)、氮气吸附脱附、扫描电子显微镜(SEM)、透射电子显微镜(TEM)对产物的结构和形貌进行了表征。用循环伏安法,恒电流充放电和交流阻抗谱等对材料进行了电化学性能的测试。结果表明,以复合表面活性剂SDS/P123为模板制备的介孔氧化镍有最大的比表面积、孔径和比电容,且当SDS/P123质量比为2:1时,所制备的氧化镍比表面积、孔径和比电容分别为209 m2.g-1,0.407 cm3.g-1,265 F.g-1。
Using nickel nitrate hexahydrate as nickel source and urea as precipitating agent, mesoporous nickel oxide was hydrothermally prepared with a small amount of complex surfactant (SDS / P123, CTAB / P123, CTBA / SDS) as template. The products were characterized by TG-DSC, FTIR, XRD, N2 adsorption and desorption, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) The structure and morphology were characterized. The electrochemical properties of the materials were tested by cyclic voltammetry, galvanostatic charge-discharge and AC impedance spectroscopy. The results showed that the mesoporous nickel oxide prepared by using the composite surfactant SDS / P123 as the template has the largest specific surface area, pore diameter and specific capacitance. When the SDS / P123 mass ratio is 2: 1, the specific surface area , Pore size and specific capacitance of 209 m2.g-1,0.407 cm3.g-1,265 Fg-1 respectively.