Conductive porous carbon nanofibers are promising for environmental, energy, and catalysis applications. However, increasing their porosity and conductivity simultaneously remains challenging. Here we report chemical crosslinking electrospinning, a macro-micro dual-phase separation method, to synthesize continuous porous carbon nanofibers with ultrahigh porosity of >80% and outstanding conductivity of 980 S cm-1. With boric acid as the crosslinking agent, poly(tetrafluoroethylene) and poly(vinyl alcohol) are crosslinked together to form water-sol webs, which are then electrospun into fibrous films. After oxidation and pyrolysis, the as-spun fibers are converted into B-F-N triply doped porous carbon nanofibers with well-controlled macro-meso-micro pores and large surface areas of ~750 m2 g-1. The sponge-like porous carbon nanofibers with substantially reduced mass transfer resistances exhibit multifunction in terms of gas adsorption, sewage disposal, liquid storage, supercapacitors, and batteries. The reported approach allows green synthesis of high-performance porous carbon nanofibers as a new platform material for numerous applications.

中文翻译：

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由海绵状多孔碳纳米纤维制成的具有高电导率的多功能柔性膜。

导电多孔碳纳米纤维有望用于环境，能源和催化应用。然而，同时增加它们的孔隙率和电导率仍然具有挑战性。在这里，我们报告化学交联静电纺丝，一种宏观-微观的双相分离方法，以合成具有> 80％的超高孔隙率和980 S cm-1的出色电导率的连续多孔碳纳米纤维。用硼酸作为交联剂，聚四氟乙烯和聚乙烯醇交联在一起形成水溶胶网，然后将其电纺成纤维膜。经过氧化和热解后，初生纤维被转化为BFN三重掺杂的多孔碳纳米纤维，具有良好控制的大介观微孔和约750 m2 g-1的大表面积。具有显着降低的传质阻力的海绵状多孔碳纳米纤维在气体吸附，污水处理，液体储存，超级电容器和电池方面表现出多功能。报道的方法允许高性能合成多孔碳纳米纤维的绿色合成，作为用于众多应用的新平台材料。