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<p>Supercapacitors have attracted much attention in recent years owing to their fast charge-discharge rate, high power density, and long cycle life. In this work, the MgFe<sub>2</sub>O<sub>4</sub> and Sn-based electrodes were synthesized using a cost-effective and facile process. The sol-gel technique was adopted for the synthesis of MgFe<sub>2</sub>O<sub>4</sub>, while the incorporation of Sn was performed by the solid-state and sonochemistry techniques. The addition of Sn enhanced the performance of MgFe<sub>2</sub>O<sub>4</sub> by increasing conductivities and charge transfer. Sn increases electrochemical site activity and electrode-electrolyte interactions for the efficient electrochemical reactions. MgFe<sub>2</sub>O<sub>4</sub>/Sn-B material showed better electrochemical activity. The highest value of the specific capacitance for MgFe<sub>2</sub>O<sub>4</sub>/Sn-B was determined to be 444&#xa0;F/g at a current density of 2&#xa0;A/g. The retention efficiency of this electrode material was found to be 97.7% after 5000 GCD cycles. The highest values for energy density and power density were determined to be 12.1 Wh/kg and 4920.1&#xa0;W/kg, respectively. The charge transfer resistance of MgFe<sub>2</sub>O<sub>4</sub>/Sn-B was evaluated to be 0.156 Ω.</p>

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Synthesis and Electrochemical Investigation of Sn Decorated MgFe2O4

  • 期刊论文

  • 发表日期：

    2026年7月6日

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  • Neelash Thapliyal,
  • Naveen Chandra Joshi,
  • Sanjeev Kimothi

摘要

Supercapacitors have attracted much attention in recent years owing to their fast charge-discharge rate, high power density, and long cycle life. In this work, the MgFe2O4 and Sn-based electrodes were synthesized using a cost-effective and facile process. The sol-gel technique was adopted for the synthesis of MgFe2O4, while the incorporation of Sn was performed by the solid-state and sonochemistry techniques. The addition of Sn enhanced the performance of MgFe2O4 by increasing conductivities and charge transfer. Sn increases electrochemical site activity and electrode-electrolyte interactions for the efficient electrochemical reactions. MgFe2O4/Sn-B material showed better electrochemical activity. The highest value of the specific capacitance for MgFe2O4/Sn-B was determined to be 444 F/g at a current density of 2 A/g. The retention efficiency of this electrode material was found to be 97.7% after 5000 GCD cycles. The highest values for energy density and power density were determined to be 12.1 Wh/kg and 4920.1 W/kg, respectively. The charge transfer resistance of MgFe2O4/Sn-B was evaluated to be 0.156 Ω.