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<p>The deteriorating and unevenly distributed Li reserves lead to the quest for Li-ion battery’s alternatives.Hybrid metal-ion batteries are gaining attention as they effectively address the limited diffusion of heavier ions into cathode materials, typically involving the combination of multi and mono-valent metal-ions.The unavailability of high-performance cathode materials restricts the use of heavier ion (e.g., Zn<sup>2+</sup>) intercalation batteries even though they offer more stable anodic behavior and good charge capacity. In the present study, bilayer V<sub>2</sub>O<sub>5</sub> nanosheets demonstrate exceptional performance as a cathode material for Zn-ion battery and Zn/Li hybrid metal-ion battery facilitating a faster conduit of ion diffusion. The Zn-ion battery and Zn/Lihybrid metal-ion battery showed high specific capacities of 270 and 510 mAh/g with fast charging rates of 0.77, and 0.6&#xa0;A/g, respectively.&#xa0;Li<sup>+</sup> is a lighter ion with an ionic radius of 0.76Å compared to the Zn<sup>2+</sup> ion that of 0.74Å and hence has shown higher diffusion into the crystal. The introduction of Li<sup>+</sup> in the hybrid metal-ion battery showed good cyclic performance with high coulombic efficiency. Thus, this study presents bilayer 2D V<sub>2</sub>O<sub>5</sub> as a favorable cathode material for Zn-ion and Zn/Li hybrid metal-ion batteries for the first time.</p>

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High performance bilayer 2D V2O5 cathode for Zn-ion and Zn/Li hybrid metal-ion intercalation battery

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年8月27日

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  • P. R. Reshma,
  • C. Lakshmanan,
  • Arun K. Prasad,
  • Sandip Dhara

摘要

The deteriorating and unevenly distributed Li reserves lead to the quest for Li-ion battery’s alternatives.Hybrid metal-ion batteries are gaining attention as they effectively address the limited diffusion of heavier ions into cathode materials, typically involving the combination of multi and mono-valent metal-ions.The unavailability of high-performance cathode materials restricts the use of heavier ion (e.g., Zn2+) intercalation batteries even though they offer more stable anodic behavior and good charge capacity. In the present study, bilayer V2O5 nanosheets demonstrate exceptional performance as a cathode material for Zn-ion battery and Zn/Li hybrid metal-ion battery facilitating a faster conduit of ion diffusion. The Zn-ion battery and Zn/Lihybrid metal-ion battery showed high specific capacities of 270 and 510 mAh/g with fast charging rates of 0.77, and 0.6 A/g, respectively. Li+ is a lighter ion with an ionic radius of 0.76Å compared to the Zn2+ ion that of 0.74Å and hence has shown higher diffusion into the crystal. The introduction of Li+ in the hybrid metal-ion battery showed good cyclic performance with high coulombic efficiency. Thus, this study presents bilayer 2D V2O5 as a favorable cathode material for Zn-ion and Zn/Li hybrid metal-ion batteries for the first time.