A H/CO fuel cell is a promising device that can convert CO into hydrocarbon fuel with electricity generation. Herein, a facile electrospinning method has been used to synthesize the embedded Ru-CNF catalyst in which Ru nanoparticles are dispersed homogeneously within N-doped carbon nanofibers. This catalyst exhibits a high CH production rate of 308.46 μmol g h at 170 °C, which is superior to that of the Ru/CNF (242.53 μmol g h) and Ru/CNT (194.24 μmol g h). The enhanced CORR performance of Ru-CNF is ascribed to the well-distributed Ru nanoparticles within the CNF matrix and synergistic effect of Ru sites with N species, which results in forming the increased CORR active sites, hence improving the catalytic activity. Simultaneously, it can achieve a peak power density of 1.8 W m on the strength of anodic (H oxidation) and cathodic (CO reduction and H evolution) reactions with remarkable stability. Such findings give a theoretical basis of CORR in the H/CO fuel cell system, which could hold great value to further develop the high-efficiency catalysts for CO reduction.
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