氢氧化镍纳米带形态演化过程及其电化学性能  

Morphology evolution and electrochemical performance of Ni(OH)_2 nanobelts

作　　者：周杰 赫文秀[1] 李兴盛[1] 李瑞芳 ZHOU Jie;HE Wen-xiu;LI Xing-sheng;LI Rui-fang(School of Chemistry Engineering,Inner Mongolia University of Science and Technology,Baotou Inner Mongolia 014010,China)

机构地区：[1]内蒙古科技大学化学与化工学院,内蒙古包头014010

出　　处：《电源技术》2018年第4期517-519,共3页Chinese Journal of Power Sources

基　　金：国家自然科学基金(21766024);内蒙古自然科学基金(2015MS 0208);包头市科技计划项目-科技创新体系建设项目(2016-4);李保卫大学生科技创新基金项目(2015108)

摘　　要：以硫酸镍和NaOH为原料,采用水热法合成氢氧化镍纳米带。利用X射线衍射(XRD)和扫描电子显微镜(SEM)研究了β-Ni(OH)2纳米带形态演化过程。利用循环伏安和恒流充放电测试技术研究了不同形貌的β-Ni(OH)2的电化学性能。研究结果表明:在6 mol/L的KOH水溶液中,放电倍率为0.2 C时,β-Ni(OH)2纳米带电极比容量为244.7 m Ah/g,且经过500次循环后容量无衰减,表现出良好的电化学性能。Nickel hydroxide nanobelts were synthesized using nickel sulfate and sodium hydroxides as raw material by hydrothermal method.The morphology evolution of Ni(OH)2 nanobelts was investigated by XRD and SEM.The electrochemical performance of different morphologyβ-Ni(OH)2 was studied by cyclic voltammetry and galvanostatic charge-discharge tests.The results show that the specific capacity of theβ-Ni(OH)2 nanobelts electrode is 244.7 mAh/g in 6 mol/L KOH aqueous solution at 0.2 C.Almost no capacity loss can be observed after 500 cycles.The electrode material shows excellent electrochemical performance.

关 键 词：Β-NI(OH)2 水热反应时间 形貌演化过程 电化学性能 

分 类 号：TM91[电气工程—电力电子与电力传动]