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纳米NiCo2O4的制备及其电化学性能
作者:吴双 刘庆 闫庆龙 姜奉华 王介强 
单位:济南大学材料科学与工程学院 济南 250022 
关键词:钴酸镍 纳米颗粒 微波均相沉淀 形貌 电化学性能 
分类号:TM911
出版年,卷(期):页码:2017,45(4):504-509
DOI:10.14062/j.issn.0454-5648.2017.04.07
摘要:

分别以氯化物和硫酸盐为母盐,尿素为沉淀剂,采用微波均相沉淀法制备了不同形貌尖晶石结构的NiCo2O4纳米粉体。结果表明:母盐种类对NiCo2O4纳米粉体形貌及其电化学性能有显著的影响。以氯化物为母盐制得的NiCo2O4,其形貌为由针状纳米级单体聚集而成的刺球状颗粒;当扫描速率为10 mV/s时,其比电容为150.7 F/g;扫描速率为50 mV/s时,比电容为107.3 39.7 F/g。以硫酸盐为母盐制得的NiCo2O4,其形貌为由片状纳米级单体聚集而成的花球状颗粒;当扫描速率为    10 mV/s时,其比电容为52.5 F/g;扫描速率为50 mV/s时,比电容为39.7 F/g。

 

NiCo2O4 nanoparticles with different morphologies were prepared via microwave homogeneous precipitation using chloride and sulfate of nickel and cobalt as raw materials and urea as a precipitant. The results show that the resultant NiCo2O4 particles present a spinal structure after the calcination of the precursors synthesized with different mother salts. The resultant particles prepared with chloride show a thorn-ball shape assembled from needle-like nano-monomer, and exhibit specific capacitances of 150.7 F/g at scanning rate of 10 mV/s, and 107.3 F/g at scanning rate of 50 mV/s, respectively. The particles prepared with sulfate show a ball-flower shape assembled from nano-flake, and exhibit specific capacitances of 52.5 F/g at a scanning rate of 10 mV/s, and 39.7 F/g at a scanning rate of 50 mV/s, respectively.

 
基金项目:
山东省自然科学基金项目(ZR2012EMM005)
作者简介:
吴 双(1992—),女,硕士研究生。
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