关键词: RuO2 , 聚苯胺 , 复合材料 , 电化学性能

Abstract: Nanometer RuO₂ particle were prepared by sol-hydrothermally method using RuCl₃·nH₂O as raw material,and RuO₂ /polyaniline composite were fabricated from aniline polymerization in RuO₂ sol by conventional chemical oxidation.The morphology and microstructure were characterized by SEM and XRD,and its electrochemical properties were investigated with cyclic voltammetry.The results indicate that the structure of the composites vary by different mass fraction of RuO₂.When the mass fraction of RuO₂ is 5%,compact RuO₂ coats are formed on the surface of polyaniline particles,and electrochemical capacitance of the composite diminish due to polyaniline capacitance disappearance.RuO₂ particles are dispersed in the polyaniline when the mass fraction of RuO₂ is more or less than 5%.The capacitance of the composite reaches the maximum is 374.6 F/g when the RuO₂ mass fraction is 3%.The composite with less RuO₂ content has good electrochemical property which is suitable for supercapacitors.

Key words: RuO₂ ,  Polyaniline , Composite , Electrochemical property