A novel high-performance electrode architecture for supercapacitors: Fe₂O₃ nanocube and carbon nanotube functionalized carbon

Electrode architecture design is of critical importance to the development of advanced hybrid electrode materials for supercapacitors. Here, we report a novel electrode architecture that is composed of Fe₂O₃ nanocubes and carbon nanotube functionalized carbon. This functionalized electrode demonstrates superior electrochemical performance, characterized by a high capacitance of 1687 mF cm^-2 at a current density of 2 mA cm^-2, excellent cycling stability, and 95.8% retention after 20 000 cycles. This work presents a new approach for fabricating advanced hybrid electrode materials for supercapacitor applications.