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Nitrogen and Fluorine-Codoped Carbon Nanowire Aerogels as Metal-Free Electrocatalysts for Oxygen Reduction Reaction

机译:氮气和氟编纂碳纳米线气凝胶作为无金属电催化剂进行氧还原反应

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摘要

The development of active, durable, and low-cost catalysts to replace noble metal-based materials is highly desirable to promote the sluggish oxygen reduction reaction in fuel cells. Herein, nitrogen and fluorine-codoped three-dimensional carbon nanowire aerogels, composed of interconnected carbon nanowires, were synthesized for the first time by a hydrothermal carbonization process. Owing to their porous nanostructures and heteroatom-doping, the as-prepared carbon nanowire aerogels, with optimized composition, present excellent electrocatalytic activity that is comparable to commercial Pt/C. Remarkably, the aerogels also exhibit superior stability and methanol tolerance. This synthesis procedure paves a new way to design novel heteroatomdoped catalysts.
机译:高效地替代贵金属基材料的活性,耐用和低成本催化剂的发展是非常希望促进燃料电池中的缓慢氧还原反应。 这里,由相互连接的碳纳米线组成的氮和氟编纂的三维碳纳米线气凝胶是通过水热碳化过程首次合成的。 由于它们的多孔纳米结构和杂原子掺杂,用优化的组合物的制备的碳纳米线气凝胶具有优异的电催化活性,可与商业Pt / c相当。 值得注意的是,气凝胶也表现出卓越的稳定性和甲醇耐受性。 该合成程序铺平了设计新型杂种型催化剂的新方法。

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