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<p>Ternary transition metal oxides (TTMOs) have recently gained attention as promising electrode materials due to their rich redox chemistry, high theoretical capacitance, and synergistic effects among constituent metals. In particular, nanocomposites incorporating ZnO:MnO:VO (ZMV) phases offer enhanced electrochemical performance, structural stability, and ion transport properties. In this study, we report the successful synthesis of ZMV nanocomposites via a controlled hydrothermal route followed by thermal treatment. X-ray diffraction (XRD) analysis revealed that the synthesized material predominantly features the face-centered cubic (FCC) phase of MnO, along with the Wurtzite phase of ZnO and Orthorhombic VO, confirming the multiphase composite structure. Cyclic voltammetry (CV) analysis demonstrated a specific capacitance of 232.11 Fg⁻1. Fabricated devices possess good energy density of 20.6 WhKg<sup>−1</sup>, excellent power density 800 WKg<sup>−1</sup>, and superior cyclic stability of 97.2% after 5000 cycles of charge and discharge. These findings highlight the potential of ZnO:MnO:VO nanocomposites as efficient electrode materials in next-generation supercapacitors, contributing significantly to the development of advanced energy storage technologies.</p>

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Electrochemical performance of ZnO:MnO:VO ternary metal oxide nanocomposite for supercapacitor applications

  • 期刊论文

  • 发表日期：

    2026年4月26日

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  • Rekha Kumari,
  • Pankaj Kumar Sharma,
  • Vivek Kumar Shukla,
  • Yogesh Kumar

摘要

Ternary transition metal oxides (TTMOs) have recently gained attention as promising electrode materials due to their rich redox chemistry, high theoretical capacitance, and synergistic effects among constituent metals. In particular, nanocomposites incorporating ZnO:MnO:VO (ZMV) phases offer enhanced electrochemical performance, structural stability, and ion transport properties. In this study, we report the successful synthesis of ZMV nanocomposites via a controlled hydrothermal route followed by thermal treatment. X-ray diffraction (XRD) analysis revealed that the synthesized material predominantly features the face-centered cubic (FCC) phase of MnO, along with the Wurtzite phase of ZnO and Orthorhombic VO, confirming the multiphase composite structure. Cyclic voltammetry (CV) analysis demonstrated a specific capacitance of 232.11 Fg⁻1. Fabricated devices possess good energy density of 20.6 WhKg−1, excellent power density 800 WKg−1, and superior cyclic stability of 97.2% after 5000 cycles of charge and discharge. These findings highlight the potential of ZnO:MnO:VO nanocomposites as efficient electrode materials in next-generation supercapacitors, contributing significantly to the development of advanced energy storage technologies.