Recently, heteroatom-doped carbon has been widely used in various fields because of their inexpensive and abundant resources, especially in oxygen reduction reaction. Here, the 1-butyl-3-methlyimidazolium hexafluorophosphate (BmimPF₆) is explored as the precursor to offer phosphorus and fluorine, and melamine as a supporter to provide nitrogen. The N, P, F-tridoped mesoporous carbons are obtained by pyrolyzing the homogeneous mixture of melamine and BmimPF₆, without any post-processing. This composition of the carbon can be used as a potential metal-free electrocatalyst for oxygen reduction reaction (ORR). Notably, the optimized N, P, and F tri-doped mesoporous carbon obtained at 900 °C, exhibits good electrocatalytic performance for ORR, with high electron-transfer number, great methanol crossover tolerance, and outstanding durability. This work may provide a new case to synthesis heteroatom-tridoped carbon for energy conversion and storage.

中文翻译：

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离子液体促进了氮，磷和氟三掺杂介孔碳的合成，作为无金属的氧还原反应电催化剂

近来，由于杂原子掺杂的碳廉价且丰富的资源，特别是在氧还原反应中，因此已广泛用于各个领域。在此，研究了六氟磷酸1-丁基-3-甲基咪唑鎓（BmimPF ₆）作为提供磷和氟的前体，以及三聚氰胺作为提供氮的载体。通过热解三聚氰胺和BmimPF ₆的均相混合物，可以得到N，P，F三价介孔碳。，无需任何后处理。碳的这种组成可用作氧还原反应（ORR）的潜在的无金属电催化剂。值得注意的是，在900°C下获得的优化的N，P和F三掺杂介孔碳对ORR表现出良好的电催化性能，具有较高的电子转移数，较高的甲醇穿越耐受性和出色的耐久性。这项工作可能为合成杂原子三掺杂碳用于能量转换和存储提供新的案例。