负载Co_(9)S_(8)纳米粒的多孔碳催化剂在碱性燃料电池中的催化活性研究  

Study on Catalytic Activity of Porous Carbon Catalysts Loaded with Co_(9)S_(8)Nanoparticles in Alkaline Fuel Cells

作　　者：吴东来[1] WU Donglai(China Automotive Engineering Research Institute Co.,Ltd.,Chongqing 401122,China)

机构地区：[1]中国汽车工程研究院股份有限公司,重庆401122

出　　处：《汽车工程学报》2024年第S1期44-51,共8页Chinese Journal of Automotive Engineering

摘　　要：目前,工业上主要用昂贵稀缺的铂材料作为燃料电池的氧还原催化剂,发展廉价高效的具备氧还原活性和高稳定性的催化剂对降低燃料电池成本具有重要意义。多孔结构的碱性燃料电池催化剂能提供更好的催化活性和稳定性。报道了一种基于Co_(9)S_(8)纳米颗粒的廉价高效电催化剂(IM-POP-Co-1000)的合成,Co_(9)S_(8)纳米颗粒装饰在Co-N-C位点上,很好地锚定在金属多孔有机聚合物中,用透射电镜、高分辨透射电镜、X射线衍射、X射线光电子能谱、电化学测试等手段对该催化剂进行了表征,结果表明,其在碱性介质中具有比贵金属催化剂Pt/C更高的氧还原催化活性和稳定性。利用低成本和大量可生产的POPs制备稳定高效的氧还原催化剂,为能源应用提供了一种有前景的方法。Currently,expensive and scarce platinum materials are mainly used as oxygen reduction catalysts for fuel cells in the industry.Developing affordable,efficient and highly stable oxygen reduction catalysts is of great significance to reduce the cost of fuel cells.The porous structure of alkaline fuel cell catalysts can provide better catalytic activity and stability.We report the synthesis of a low-cost and efficient electrocatalyst,IM-POP-Co-1000,based on Co_(9)S_(8)nanoparticles.These nanoparticles are decorated at the Co-N-C sites and are well anchored in metal porous organic polymers.The catalyst was characterized by transmission electron microscopy,high-resolution transmission electron microscope,X-ray diffraction,X-ray photoelectron spectroscopy,and electrochemical tests.The results show that it exhibits higher oxygen reduction catalytic activity and stability in an alkaline medium than the noble metal catalyst Pt/C.Therefore,this study provides a promising approach for energy applications by using low-cost and mass-producible POPs to prepare stable and efficient redox catalysts.

关 键 词：电催化剂 Co_(9)S_(8) 燃料电池 POPS 

分 类 号：TK91[动力工程及工程热物理]