为提高聚吡咯电极材料电化学性能，研制出一种普鲁士蓝（PB）镶嵌聚吡咯（PPy）薄膜电化学电容器电极。采用化学沉淀法结合气相聚合（VPP）法将同步合成的PB引入PPy薄膜中，制备了自支撑聚吡咯/普鲁士蓝（PPy/PB）复合电极材料。利用扫描电子显微镜、拉曼光谱、X射线粉末衍射技术等对复合材料的形貌及结构进行表征。在三电极体系和对称超级电容器中研究PPy/PB复合材料的电化学表现，研究结果表明，PPy/PB复合材料组装的超级电容器比电容高达447.6 F/g。不同电流密度下充放电性能研究表明，电流密度从1.0 A/g增大到10.0 A/g时，PPy/PB比容量保持率为70.8%，具有优异的倍率性能。通过4 000次恒流充放电后PPy/PB电容保持率为76.9%，高于纯PPy电极材料，显示出较好的电容性能。

To improve the electrochemical performance of polypyrrole electrode materials, a Prussian blue (PB) embedded polypyrrole thin film electrochemical capacitor electrode is developed.Self-supported polypyrrole/Prussian blue (PPy/PB) composite electrode materials are prepared by combining chemical precipitation and vapor phase polymerization (VPP) methods with adding the synchronously synthesized PB into PPy film.Scanning electron microscopy, Raman spectroscopy, X-ray powder diffraction technology, etc.are employed to characterize the morphology and structure of the composite materials.The electrochemical performance of PPy/PB composites is studied in three-electrode system and symmetric supercapacitor, respectively.The results prove that the specific capacitance of the supercapacitor assembled by PPy/PB composite electrode exhibits an excellent capacitance of 447.6 F·g^-1.It is shown that the retention rate of specific capacity is 70.8% when the current density increases from 1.0 A·g^-1 to 10 A·g^-1, indicating that PPy/PB has an excellent rate performance.The capacitance retention rate of PPy/PB is 76.9% after 4 000 GCD cycles, which is higher than that of pure PPy, showing better electrochemical performance.

胡晓梅(1997-),女,硕士研究生,研究方向为应用电化学,15666363457@163.com。