Prussian blue analogue-derived Co₃O₄/Fe₂O₃ with a partially hollow and octahedral structure for high-performance supercapacitors

Abstract

derived from the oxide particles on the surface and within the inner parts of the octahedron, which are available for electron transport. Meanwhile, the open void between adjacent nanoparticles allows the electrolyte ions to diffuse more efficiently and ensures a much more effective area for participating in a reaction. The strategy will give new insights into designing high-performance SCs based on PBAs.