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<p>Transition metal oxides (TMOs) hold significant promise as electrode material for energy storage applications in supercapacitors. Ruthenium cobalt oxide (RuCo<sub>2</sub>O<sub>4</sub>) 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<sub>2</sub>O<sub>4</sub> thin films via a cost-effective and potentially eco-friendly electroless deposition method. The effect of post-deposition annealing at 100, 200, and 300&#xa0;°C for 2&#xa0;h on the structural, morphological, and electrochemical properties of the resulting RuCo<sub>2</sub>O<sub>4</sub> 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&#xa0;°C exhibited superior performance, achieving a specific capacitance (<i>C</i><sub><i>s</i></sub>) of 1732&#xa0;F&#xa0;g⁻<sup>1</sup> at a scan rate of 10&#xa0;mV&#xa0;s⁻<sup>1</sup>. 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&#xa0;°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<sub>2</sub>O<sub>4</sub> for use in high-performance supercapacitors for advanced energy storage applications.</p>

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Nanostructured ruthenium cobalt oxide electrodes for enhanced supercapacitor performance

  • 期刊论文

  • 发表日期：

    2025年8月27日

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  • Avdhut S. Sutar,
  • Jayshri L. Patil,
  • Bhagyasree A. Sutar,
  • Rutuja A. Chavan,
  • Surendra K. Shinde,
  • Prashant B. Patil,
  • Bhushan B. Dhale,
  • Raman Kumar,
  • Sadaf Jamal Gilani,
  • Mohaseen S. Tamboli,
  • Nguyen Tam Nguyen Truong,
  • Sachin J. Pawar

摘要

Transition metal oxides (TMOs) hold significant promise as electrode material for energy storage applications in supercapacitors. Ruthenium cobalt oxide (RuCo2O4) 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 RuCo2O4 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 RuCo2O4 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 (Cs) 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 RuCo2O4 for use in high-performance supercapacitors for advanced energy storage applications.