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以聚吡咯(PPy)为基体,FeCl_3作为氧化剂,十二烷基苯磺酸钠(DBSNa)作为掺杂剂,表面镀有金属镍(Ni)膜的纳米石墨微片(NanoG)作为二维层状纳米填料,通过原位聚合法制备了PPy/Ni/NanoG导电复合材料,并对其结构和导电性能进行了表征。结果表明,PPy与Ni/NanoG的相容性较好,PPy聚合物均匀地包覆在Ni/NanoG片层表面和边缘;Ni/NanoG的二维受限空间的阻隔作用能够有效抑制PPy分子链的卷曲和交联,使PPy分子链共轭程度提高,π电子的离域性增加;循环伏安测试表明复合材料的峰面积大,峰电流高,导电能力强;复合材料的导电性能随Ni/NanoG含量的增加由8.2 S/cm提高到103.6 S/cm,Ni/NanoG的阈值为2%(质量分数,下同)。
Using nanometer graphite nanoplatelets (NanoG) with PPy as substrate, FeCl_3 as oxidant and DBSNa as dopant, and metal nickel (Ni) Like nano-filler was prepared by in-situ polymerization PPy / Ni / NanoG conductive composite material, and its structure and electrical conductivity were characterized. The results show that PPy has good compatibility with Ni / NanoG, and PPy polymer is uniformly coated on the surface and edge of Ni / NanoG lamella. The barrier of two-dimensional constrained space Ni / NanoG can effectively inhibit the PPy molecular chain , The degree of conjugation of PPy chain increased and the π-electron delocalization increased. Cyclic voltammetry showed that the peak area of the composite was large, the peak current was high and the conductivity was high. The conductivity of the composite increased with the Ni / NanoG increased from 8.2 S / cm to 103.6 S / cm, Ni / NanoG threshold of 2% (mass fraction, the same below).