纳米结构的钌钴氧化物电极用于提升超级电容器性能

Transition metal oxides (TMOs) hold significant promise as electrode material for energy storage applications in supercapacitors. Ruthenium cobalt oxide (RuCo 2 O 4 ) stands out due to its potential for high redox activity, electrical conductivity, and a porous nanostructure, making it a promising candidate for high-performance energy storage applications. This study investigates the synthesis of RuCo 2 O 4 thin films via a cost-effective and potentially eco-friendly electroless deposition method. The effect of post-deposition annealing at 100, 200, and 300 °C for 2 h on the structural, morphological, and electrochemical properties of the resulting RuCo 2 O 4 films was systematically evaluated. These annealing temperatures have a better impact on the crystallinity and porosity of the materials, these main factors improving the electrochemical performance. The film annealed at 200 °C exhibited superior performance, achieving a specific capacitance ( C s ) of 1732 F g⁻ 1 at a scan rate of 10 mV s⁻ 1 . This enhanced performance was accompanied by cyclic (CV) voltammetry results, with well-defined redox peaks indicative of pseudocapacitive behavior. The improved electrochemical properties are attributed to the porous nanostructure observed in the films annealed at 200 °C, which provides a higher active surface and faster ion transport during the electrochemical reaction. This simple and cost-effective method shows the potential of RuCo 2 O 4 for use in high-performance supercapacitors for advanced energy storage applications.