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<p>A series of Mn-N-C catalysts were fabricated by integrating electrospinning technology with subsequent heat treatment at 700°C, 800°C, and 900°C, using manganese acetate (Mn(OAc)<sub>2</sub>) and polyacrylonitrile (PAN) as the main raw materials. Under various calcination temperature conditions, all the Mn-N-C catalysts presented a nanowire morphology with a diameter of approximately 300&#xa0;nm. A series of electrochemical performance tests for Li-O<sub>2</sub> batteries were carried out on the Mn-N-C catalysts. The results showed that all the Mn-N-C catalysts demonstrated good oxygen reduction reaction (ORR) activity. Among them, the Mn-800 catalyst had the lowest overpotential (1.5&#xa0;V) and superior cycling performance (more than 150 cycles at 1000&#xa0;mA&#xa0;g<sup>−1</sup>). This outcome implies that the Mn-800 catalyst holds significant potential in enhancing battery performance and prolonging battery lifespan, offering novel ideas and approaches for developing high-performance Li-O<sub>2</sub> batteries.</p>

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Electrospun Mn-N-C Nanofiber Electrocatalyst for the Application of Li-O2 Batteries

  • 期刊论文

  • 发表日期：

    2025年5月7日

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  • Zhuxin Li,
  • Hongquan Yu,
  • Kai Ma,
  • Qingzhu Shu,
  • Yong Zhang,
  • Shuhong Liu,
  • Xufeng Li,
  • Jing Ge,
  • Yunlong Gao,
  • Hong Zhao

摘要

A series of Mn-N-C catalysts were fabricated by integrating electrospinning technology with subsequent heat treatment at 700°C, 800°C, and 900°C, using manganese acetate (Mn(OAc)2) and polyacrylonitrile (PAN) as the main raw materials. Under various calcination temperature conditions, all the Mn-N-C catalysts presented a nanowire morphology with a diameter of approximately 300 nm. A series of electrochemical performance tests for Li-O2 batteries were carried out on the Mn-N-C catalysts. The results showed that all the Mn-N-C catalysts demonstrated good oxygen reduction reaction (ORR) activity. Among them, the Mn-800 catalyst had the lowest overpotential (1.5 V) and superior cycling performance (more than 150 cycles at 1000 mA g−1). This outcome implies that the Mn-800 catalyst holds significant potential in enhancing battery performance and prolonging battery lifespan, offering novel ideas and approaches for developing high-performance Li-O2 batteries.