EDTA-Functionalized MgO as a High-Performance Electrode Material for Supercapacitor Applications

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@article{1723302,
      author = {Lalit N. Patil, Madhukar G. Kasar},
      title = {EDTA-Functionalized MgO as a High-Performance Electrode Material for Supercapacitor Applications},
      journal = {Iconic Research And Engineering Journals},
      year = {2026},
      volume = {10},
      number = {3},
      pages = {2469-2479},
      issn = {2456-8880},
      url = {https://www.irejournals.com/formatedpaper/1723302.pdf},
      abstract = {The increasing demand for efficient and sustainable energy-storage systems has stimulated the development of advanced electrode materials for supercapacitor applications. In the present work, ethylenediaminetetraacetic acid-functionalized magnesium oxide (EDTA@MgO) was developed as a surface-modified electrode material to improve the electrochemical performance of pristine MgO. MgO was synthesized through a precipitation-assisted ultrasonication method followed by calcination, while EDTA functionalization was subsequently employed to modify its surface properties. The structural, functional, morphological, and optical characteristics of the prepared materials were investigated using XRD, FTIR, FE-SEM, and UV–Visible spectroscopy. XRD analysis confirmed the crystalline cubic structure of MgO, whereas FTIR results supported the successful interaction of EDTA with the MgO surface. FE-SEM analysis revealed a hierarchical agglomerated morphology for MgO and noticeable surface modification with layered features after functionalization. Electrochemical investigations demonstrated the superior performance of EDTA@MgO compared with pristine MgO. The EDTA@MgO electrode exhibited an enhanced CV response, reduced impedance characteristics, and improved charge-storage capability. A specific capacitance of 356.22 F g⁻¹ at 10 mV s⁻¹ was obtained from CV analysis, while a higher specific capacitance of 507.26 F g⁻¹ at 1 A g⁻¹ was achieved from GCD measurements. The improved performance is attributed to enhanced electrolyte interaction and increased accessibility of electrochemically active sites following EDTA functionalization. These findings demonstrate the potential of EDTA@MgO as a promising electrode material for supercapacitor applications.},
      keywords = {EDAT, MgO, Supercapacitor, metal oxide},
      month = {September},
  }