摘要：以NiSO₄·6H₂O为镍源, Co (NO₃) ₂·6H₂O为钴源, 氨水为沉淀剂, 利用二级微撞击流反应器 (MISR) 制备镍钴氧 (Ni-Co-O) 复合材料;利用扫描电子显微镜 (SEM) 、比表面及孔隙度分析仪、电池测试系统等对复合材料的形貌、比表面积以及电化学性能进行表征。结果表明:利用二级MISR制备的Ni-Co-O复合材料粒径约为50 nm, 具有较大的比表面积;电流密度为1 A/g时进行循环充放电, 最高比电容值达到2 700 F/g左右, 循环500次比电容值基本无衰减。

关键词：镍钴氧复合材料；电容材料；微反应器；撞击流

Abstract：Ni-Co-O composites were prepared by a novel two-stage micro-impinging stream reactor (MISR) with NiSO₄·6H₂O and Co (NO₃) ₂·6H₂O as raw materials and ammonia as precipitant. The morphology, specific surface area and electrochemical performance of the composites were characterized by scanning electron microscopy (SEM) , surface area analyzer and cell testing systems. The results show that Ni-Co-O composites with a particle size of 50 nm and a large specific surface area are prepared by the two-stage MISR. At a constant current density of 1 A/g, the Ni-Co-O electrode have a maximum specific capacitance of about 2 700 F/g and almost 100%capacitance retention after 500 charge-discharge cycles.

Keywords：Ni-Co-O composites；capacitance materials；micr o-reactor；impinging stream