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<p>The development of high-performance cathode materials is critical for advancing aqueous zinc-ion batteries (AZIBs) as sustainable energy storage systems. In this work, we report the synthesis and comprehensive characterization of a manganese dioxide–manganese vanadium oxide (MnO<sub>2</sub>/MVO) composite as a novel cathode material for AZIBs. The composite was fabricated via a controlled two-step hydrothermal process, resulting in the successful incorporation of MnV<sub>2</sub>O<sub>6</sub> into α-MnO<sub>2</sub> nanorod frameworks without compromising phase purity. Detailed structural, morphological, and electrochemical investigations reveal that though the specific surface area of the MnO<sub>2</sub>/MVO composite is reduced compared to pristine MnO<sub>2</sub>, its broader pore size distribution and enhanced structural stability significantly improve electrochemical performance. The composite exhibits a high reversible capacity of 295.2 mAh g<sup>− 1</sup> at 50 mA g<sup>− 1</sup>, superior cycling stability, improved rate capability, and higher Zn²⁺ diffusion coefficients. These enhancements are attributed to the synergistic interaction between the high theoretical capacity of MnO<sub>2</sub> and the structural integrity imparted by MnV<sub>2</sub>O<sub>6</sub>. This study highlights a promising materials design strategy for overcoming intrinsic limitations of MnO<sub>2</sub>-based cathodes and contributes valuable insights into the development of next-generation AZIB technologies.</p>

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First investigation of synthesis and study of properties of manganese dioxide – manganese vanadium oxide composite material applied as cathode electrode for aqueous zinc-ion battery

  • 期刊论文

  • 发表日期：

    2026年1月4日

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  • Kim Chi Tran Thi,
  • Long Van Le,
  • Tien-Thanh Nguyen,
  • Tran Thi Huong Giang,
  • Anh Duong Pham,
  • Tien Phat Doan,
  • Nguyen To Van,
  • Thu Hoa Nguyen Thi,
  • Tuan Nguyen Van

摘要

The development of high-performance cathode materials is critical for advancing aqueous zinc-ion batteries (AZIBs) as sustainable energy storage systems. In this work, we report the synthesis and comprehensive characterization of a manganese dioxide–manganese vanadium oxide (MnO2/MVO) composite as a novel cathode material for AZIBs. The composite was fabricated via a controlled two-step hydrothermal process, resulting in the successful incorporation of MnV2O6 into α-MnO2 nanorod frameworks without compromising phase purity. Detailed structural, morphological, and electrochemical investigations reveal that though the specific surface area of the MnO2/MVO composite is reduced compared to pristine MnO2, its broader pore size distribution and enhanced structural stability significantly improve electrochemical performance. The composite exhibits a high reversible capacity of 295.2 mAh g− 1 at 50 mA g− 1, superior cycling stability, improved rate capability, and higher Zn²⁺ diffusion coefficients. These enhancements are attributed to the synergistic interaction between the high theoretical capacity of MnO2 and the structural integrity imparted by MnV2O6. This study highlights a promising materials design strategy for overcoming intrinsic limitations of MnO2-based cathodes and contributes valuable insights into the development of next-generation AZIB technologies.