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以两亲性嵌段共聚物聚乙二醇-b-聚四乙烯基吡啶(PEO-b-P4VP)为模板制备聚联苯胺微/纳米颗粒,调节模板剂胶束溶液pH,得到了一系列形貌和尺寸可控的聚联苯胺微/纳米颗粒。利用红外光谱、核磁共振、透射电镜、循环伏安、恒电流放电、交流阻抗等测试对材料的结构和性能进行了表征。模板法合成的聚联苯胺为平均直径小于200nm的亚微米至纳米级棒状颗粒,其直径随着模板剂胶束溶液pH的降低而增加。所得聚联苯胺颗粒均显示了一定的电化学活性,当电流密度为1A/g时,聚联苯胺的比电容量达到306.3F/g,经过长时间的充放电测试,不同条件下合成的聚联苯胺的容量衰减率均很小,表现出良好的循环稳定性且各样品电化学性能呈现出随着直径的减小而增强的趋势。
Polybenzidine micro / nano-particles were prepared by using amphiphilic block copolymer polyethylene glycol-b-polytetravinylpyridine (PEO-b-P4VP) as template to adjust the pH of the micellar solution. Topography and Size Controlled Polybenzidine Micro / Nanoparticles. The structure and properties of the materials were characterized by FTIR, NMR, TEM, cyclic voltammetry, galvanostatic discharge and AC impedance. The polybenzidine synthesized by the template method is a sub-micron to nano-scale rod-like particle with an average diameter of less than 200 nm, and its diameter increases as the pH of the template micellar solution decreases. The obtained polybenzidine particles showed a certain electrochemical activity. When the current density was 1 A / g, the specific capacitance of polybenzidine reached 306.3 F / g. After a long period of charge and discharge test, the poly The capacity decay rate of benzidine was small, showing good cyclic stability and the electrochemical performance of each sample showed a trend of increasing with the decrease of diameter.