微乳体系中纳米Ni(OH)_2的制备与性能研究  

Preparation and performance of nanometer Ni(OH)_2 in microemulsion system

作　　者：童孟良[1] 严伟光 

机构地区：[1]湖南化工职业技术学院化工系,湖南株洲412004 [2]南车电气与材料工程研究院,湖南株洲412003

出　　处：《电源技术》2013年第10期1787-1789,共3页Chinese Journal of Power Sources

摘　　要：研究了在C TA B/正丁醇/正庚烷微乳体系下纳米N i(O H)2的制备,通过X射线衍射、傅里叶变换红外光谱法、透射电镜对样品进行了表征,通过循环伏安、恒电流充放电、交流阻抗研究H 2O与表面活性剂不同摩尔比值时N i(O H)2的电化学性能。实验结果表明:在H 2O与表面活性剂最佳摩尔比值为30的微乳体系下制备了长度为15~20 nm,平均直径约2 nm的针状纳米β-N i(O H)2。其最大放电比容量为226.9 m A h/g,且循环稳定性好,电化学性能优越。CTAB/n-butyl alcohol/n-heptane microemulsion system was used to synthesize nanometer Ni（OH）2 and the electrochemical performance of Ni（OH）2 with different （[H20]/[surface active agent（mol）] was studied, and the sample was characterized through X-ray diffraction, transmission electron microscope, infrared spectroscopy, cyclic voltammetry, galvanostatic charging and discharging and alternating-current impedance. The experimental results indicate that particle prepared by the optimal （[H20]/[surface active agent（mol）] is needle-like I^-Ni （OH）2 and the mean length is 15-20 nm and the average diameter is 2 nm. Its maximum specific discharge capacity is 226.9 mAh/g with good cycle stability and superior electrochemical performance.

关 键 词：微乳体系 纳米氢氧化镍 表征 电化学性能 

分 类 号：TM912[电气工程—电力电子与电力传动]