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首页> 外文期刊>RSC Advances >Atomically thin SiC nanoparticles obtained via ultrasonic treatment to realize enhanced catalytic activity for the oxygen reduction reaction in both alkaline and acidic media
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Atomically thin SiC nanoparticles obtained via ultrasonic treatment to realize enhanced catalytic activity for the oxygen reduction reaction in both alkaline and acidic media

机译：通过 超声处理获得的原子薄的SiC纳米颗粒，可在碱性和酸性介质中实现增强的氧还原反应催化活性

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摘要

Inorganic graphene analogues (IGAs) are promising catalysts for the oxygen reduction reaction (ORR) in fuel cells; however, their catalytic activities need to be improved. Herein, we report atomically thin SiC obtained via a simple ultrasonic treatment of commercial SiC as an efficient electrocatalyst for the ORR in alkaline and acidic media. Due to the advantages of its unique surface composition and structure, the atomically thin SiC shows remarkable catalytic activity for the ORR and the number of electrons transferred per O2 is close to four in both alkaline and acidic media. Compared with commercial Pt/C, the atomically thin SiC possesses prominent durability and tolerance to methanol crossover, and thus can be developed into a low-cost and efficient alternative as a cathodic electrode in fuel cells.
机译：无机石墨烯类似物（IGA）是燃料电池中氧还原反应（ORR）的有前途的催化剂。但是，它们的催化活性有待提高。本文中，我们报道了通过 的简单超声波处理获得的原子薄的SiC，该碳化物是对商用SiC进行的简单超声处理，可作为碱性和酸性介质中ORR的有效电催化剂。由于其独特的表面组成和结构的优势，原子薄的SiC对ORR表现出显着的催化活性，并且每O 2 的转移电子数接近4在碱性和酸性介质中。与商业化的Pt / C相比，原子薄SiC具有突出的耐久性和对甲醇穿透的耐受性，因此可以作为燃料电池中的阴极电极开发为低成本高效的替代品。

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