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首页> 外文期刊>International Journal of Electrochemical Science >Co/CoO Nanoparticles/Ag Nanowires/Nitrogen Codoped Electrospun Carbon Nanofibers as Efficient Electrocatalysts for Oxygen Reduction
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Co/CoO Nanoparticles/Ag Nanowires/Nitrogen Codoped Electrospun Carbon Nanofibers as Efficient Electrocatalysts for Oxygen Reduction

机译：Co / CoO纳米颗粒/ Ag纳米线/氮共掺杂电纺碳纳米纤维作为高效的氧还原电催化剂

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Development of efficient electrocatalysts for oxygen reduction reaction (ORR) is of crucial importanceto optimize the performance of fuel cells. In this work, Firstly, Ag nanowires (AgNWs) were in-situembedded in electrospun carbon nanofibers (CNF). Then, Nitrogen and Co/CoO nanoparticles(Co/CoO NPs) were successively codoped into CNF-AgNWs via the thermal annealing process,- aiming to increase the accessible surface area of CNF-AgNWs and facilitate O2 diffusion and OHtransport of the resulting N-CNF-AgNWs-Co/CoO hybrids. It is demonstrated that N-CNF-AgNWs- Co/CoO exhibited excellent electrocatalytic activity for the ORR in alkaline electrolytes, includinghigh onset potential (-0.069 V), high half-wave potential (-0.246 V), and large electron transfernumber (~4).
机译：开发用于氧还原反应（ORR）的高效电催化剂对于优化燃料电池的性能至关重要。在这项工作中，首先，将银纳米线（AgNWs）原位嵌入电纺碳纳米纤维（CNF）中。然后，通过热退火工艺将氮和Co / CoO纳米颗粒（Co / CoO NPs）连续共掺杂到CNF-AgNWs中，目的是增加CNF-AgNWs的可及表面积，并促进所得N-的O2扩散和OH迁移。 CNF-AgNWs-Co / CoO杂种。结果表明，N-CNF-AgNWs-Co / CoO对碱性电解质中的ORR表现出优异的电催化活性，包括高起始电位（-0.069 V），高半波电位（-0.246 V）和大电子转移数（〜 4）。

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