Electrospun polyacrylonitrile (PAN) based carbon nanofibres (CNF) are employed as cathode catalysts in anion‐exchange membrane fuel cell (AEMFC) for the first time. The catalysts are prepared via pyrolysis of Co or Fe salt‐containing PAN fibre with and without the ionic liquid (IL) additive. The catalyst material preparation is optimised by assessing the oxygen reduction reaction (ORR) activity of different transition metal and nitrogen‐doped CNFs in 0.1 M KOH by rotating disc electrode method followed by testing in real AEMFC configuration. The best performance in the AEMFC is observed in case of Fe and IL containing PAN fibre that was pyrolysed at 1000 °C and additionally treated in an acid solution (Fe/IL‐PAN‐A1000). In the AEMFC, the Fe/IL‐PAN‐A1000 catalyst showed the maximum power density (P_max) of 289 mW cm⁻², which is 82 % of the P_max obtained with commercial Pt/C cathode catalyst (352 mW cm⁻²).

中文翻译：

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电纺聚丙烯腈衍生的含钴或铁的纳米纤维催化剂，用于碱性膜燃料电池阴极的氧还原反应

静电纺聚丙烯腈（PAN）的碳纳米纤维（CNF）首次在阴离子交换膜燃料电池（AEMFC）中用作阴极催化剂。催化剂可通过对含或不含离子液体（IL）添加剂的含Co或Fe盐的PAN纤维进行热解而制得。通过评估不同过渡金属和氮掺杂CNF在0.1 M KOH中的氧还原反应（ORR）活性，采用旋转圆盘电极法，然后在实际AEMFC配置中进行测试，从而优化了催化剂材料的制备。如果将含有Fe和IL的PAN纤维在1000°C下热解并在酸性溶液（Fe / IL-PAN-A1000）中进行处理，则AEMFC的性能最佳。在AEMFC中，Fe / IL-PAN-A1000催化剂显示出最大功率密度（P_max）为289 mW cm ^-2，是使用商用Pt / C阴极催化剂（352 mW cm ^-2）获得的P _max的82％。