Prussian blue/reduced graphene composite thin film material and preparation method and application thereof

The invention discloses a ''prussian blue/reduced graphene'' composite thin film material and a preparation method and an application thereof. The composite thin film material obtained in the invention has a layer-upon-layer stacking structure of a ''reduced graphene/(prussian blue/reduced graphene)''. The composite material, based on excellent mechanical performance and carrier mobility of reduced graphene, supplies structural support and a charge transmission channel for the prussian blue; meanwhile, by virtue of the advantages of rich open pore channel structure of the prussian blue, electrochemical activity of the stored chargers, and the like, excellent capacitance performance is realized; the specific area capacitance can reach 50.5mF.cm; and therefore, the material has quitehigh application potential in a supercapacitor. 本发明公开了种"普鲁士蓝/还原石墨烯"复合薄膜材料及其制备方法和应用，本发明得到的复合薄膜材料具有"还原石墨烯/(普鲁士蓝/还原石墨烯)"的、层层堆垛的结构。本发明的复合材料利用了还原石墨烯优异的机械性能、载流子迁移率、为普鲁士蓝提供结构支持和电荷传输的通道，同时利用普鲁士蓝丰富的开放孔道结构和存储电荷的电化学活性等优点，实现了优异的电容性能，比面积电容可达