FexOy/PPy/MnO2超级电容器杂化电极原位电化学合成策略OA

A continuous electrochemical synthesis strategy combining anodization and electrophylmerization is proposed for the in-situ preparation of transition metal oxide/conducting polymer(FexOy/PPy)hybrid electrodes in supercapacitors.In an oxalic acid system,using porous iron oxide as a template,the modification with polypyrrole achieves an armor-like protection for the iron oxide,which helps to alleviate the volume expansion during charge-discharge cycles and significantly improves the poor cycling performance of traditional metal oxides.Simultaneously,polypyrrole forms an extensive conductive network with ultrafast electron transport based on the large surface area template that provides abundant active sites,effectively addressing issues such as the poor conductivity of metal oxides and slow ion transport kinetics.With the further introduction of Mn2+,a FexOy/PPy/MnO2 ternary hybrid electrode is successfully prepared via a one-step co-deposition strategy,verifying the applicability of the synthesis strategy for multi-component hybrid electrode materials in the oxalic acid system and comprehensively evaluating the mechanism of Mn2+on the electrochemical performance of the hybrid electrode material.Furthermore,the influence of the compatibility between organic and inorganic materials on the cycling stability of the ternary hybrid electrode is investigated.This functional hybridization strategy utilizing organic and inorganic materials provides a new approach for designing efficient,binder-free supercapacitor electrodes.