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首页> 美国卫生研究院文献>Science and Technology of Advanced Materials >A simple synthesis method for nanostructured Co-WC/carbon composites with enhanced oxygen reduction reaction activity
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A simple synthesis method for nanostructured Co-WC/carbon composites with enhanced oxygen reduction reaction activity

机译：具有增强的氧还原反应活性的纳米结构Co-WC /碳复合材料的简单合成方法

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Co nanoparticles (Co NPs) and nanoscale tungsten carbide (WC) are successfully synthesized simultaneously with mesoporous structured carbon black (C) using an innovative simple method, which is known as solution plasma processing (SPP), and NPs are also loaded onto carbon black at the same time by SPP. The introduction of Co NPs led to not only superior oxygen reduction reaction (ORR) activity in terms of onset potential and peak potential, but also to a more efficient electron transfer process compared to that of pure WC. Co-WC/C also showed durability for long-term operation better than that of commercial Pt/C. These results clearly demonstrate that the presence of Co NPs significantly enhanced the ORR and charge transfer number of neighboring WC NPs in ORR activities. In addition, it was proved that SPP is a simple method (from synthesis of NPs and carbon black to loading on carbon black) for the large-scale synthesis of NP-carbon composite. Therefore, SPP holds great potential as a candidate for next-generation synthetic methods for the production of NP-carbon composites.
机译：使用一种称为溶液等离子体处理（SPP）的简单方法，成功地与介孔结构炭黑（C）成功地同时合成了钴纳米颗粒（Co NPs）和纳米级碳化钨（WC），并且NPs也被装载到了炭黑上同时由SPP负责。 Co NPs的引入不仅在起始电势和峰值电势方面带来了卓越的氧还原反应（ORR）活性，而且与纯WC相比，还导致了更有效的电子转移过程。 Co-WC / C的长期运行耐久性也比市售Pt / C更好。这些结果清楚地表明，Co NPs的存在显着增强了ORR活动中相邻WC NPs的ORR和电荷转移数。此外，已证明，SPP是大规模合成NP-碳复合物的简单方法（从NP和碳黑的合成到炭黑的负载）。因此，SPP作为生产NP-碳复合材料的下一代合成方法的候选者具有巨大潜力。

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