To address the shortcomings of VO2(B) when utilized as cathode materials for aqueous zinc ion batteries (AZIB), this study prepared a fluorine and manganese co-doped VO2(B) with a nanorod-like structure, formed from convoluted multilayered nanosheets, was synthesized via a solvothermal method. It was established that F and Mn doping effectively broadens the lattice structure and tunneling space of VO2(B) and induces lattice distortion of VO2(B) through the high electronegativity of F element, leading to the ductile growth of FMVO into a nanorod-like structure made of multilayered ultrathin nanosheets curled. The increased tunneling space and active sites of FMVO, compared to pure VO2(B), significantly enhanced the de-embedding rate of Zn2+ and reduced diffusion resistance. The specific capacity of F0.06M0.02VO is 523.92 mAh/g (0.2 A/g) with 88.64 % capacity retention after 2,000 cycles (5 A/g). This research provides a novel approach to the development of cathode materials for AZIB.

中文翻译：

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多层纳米片卷曲棒形式的高性能 F、Mn 共掺杂 VO2（B） 正极材料及其水性锌离子电池应用


为了解决 VO2（B） 用作水系锌离子电池 （AZIB） 正极材料的缺点，本研究通过溶剂热法制备了一种具有纳米棒状结构的氟和锰共掺杂 VO2（B），该化合物由波纹多层纳米片形成。结果表明，F 和 Mn 掺杂有效地拓宽了 VO2（B） 的晶格结构和隧穿空间，并通过 F 元件的高电负性诱导 VO2（B） 的晶格畸变，导致 FMVO 的延展性生长成由多层超薄纳米片卷曲制成的纳米棒状结构。与纯 VO2 （B） 相比，FMVO 增加的隧穿空间和活性位点显著提高了 Zn2+ 的脱嵌入速率并降低了扩散阻力。F0.06M0.02VO 的比容量为 523.92 mAh/g （0.2 A/g），2,000 次循环 （5 A/g） 后容量保持率为 88.64%。本研究为 AZIB 正极材料的开发提供了一种新的方法。