聚苯胺/纳米镍/碳纳米管复合材料制备和电化学性能研究

Preparation and electrochemical properties of PANI/Ni/MWCNTs

以酸化处理的碳纳米管为模板,采用原位聚合法,以过硫酸铵为氧化剂,成功制备出以纳米镍/多壁碳纳米管复合材料为核,以聚苯胺为壳的三元核壳复合材料,通过循环伏安、交流阻抗和恒流充放电等方法对不同质量分数纳米镍/多壁碳纳米管的三元核壳复合材料进行电化学性能测试。制备的电极材料,循环伏安法在0.001 V·s^(-1)下测其比电容值(Cp-cv)达到737.13 F·g^(-1),其组装的超级电容器在10 mA·cm^(-2)条件下的比电容值为50.86 F·g^(-1)。为开发高性能超级电容器提供了有效途径。

The ternary core-shell composites(PANI/Ni/MWCNTs)with nickel nanotube/multi-wall carbon nanotubes(Ni/MWCNTs)as core and polyaniline as shell were successfully prepared in situ polymerization using acidized carbon nanotubes template and ammonium persulfate as oxidant,The electrochemical properties of the composites with different mass fractions of Ni/MWCNTs were analyzed by cyclic voltammetry,AC impedance and constant current charge-discharge methods.The specific capacitance(Cp-cv)of the prepared electrode material reached 737.13 F·g^(-1)at 0.001 V·s^(-1)by cyclic voltammetry,and specific capacitance of the assembled supercapacitor was 50.86 F·g^(-1)at 10 mA·cm^(-2).This approach is expected to provide an effective way to develop high-performance supercapacitiors.