电化学2023，Vol.29Issue(5)：12-23,12.DOI:10.13208/j.electrochem.2210241
氮掺杂多孔碳包覆铁纳米粒子催化剂用于高效碱性介质中氧还原反应
Fe Nanoparticles Encapsulated in N-doped Porous Carbon for Efficient Oxygen Reduction in Alkaline Media
摘要
Abstract
Rational design and synthesis of non-precious-metal catalyst plays an important role in improving the activity and stability for oxygen reduction reaction(ORR)but remains a major challenge.In this work,we used a facile approach to synthesize iron nanoparticles encapsulated in nitrogen-doped porous carbon materials(Fe@N-C)from functionalized metal-organic frameworks(MOFs,MET-6).Embedding Fe nanoparticles into the carbon skeleton increases the graphitization degree and the proportion of graphitic N as well as promotes the formation of mesopores in the catalyst.The Fe@N-C-30 catalyst showed the excellent ORR activity in alkaline solutions(E0=0.97 V vs.RHE,E1/2=0.89 V vs.RHE).Moreover,the Fe@N-C-30 catalyst exhibited better methanol resistance and long-term stability when compared to commercial Pt/C.The superior ORR performance could be attributed to the combination of high electrochemical surface area,relative high portion of graphitic-N,unique porous structures and the synergistic effect between the encapsulated Fe particles and the N-doped carbon layer.This work provides a promising method to construct efficient non-precious-metal ORR catalyst through MOFs.关键词
金属有机框架/多孔结构/铁纳米粒子/氧还原反应Key words
Metal-organic frameworks/Porous structures/Fe nanoparticles/Oxygen reduction reaction引用本文复制引用
李春艳,张蕊,巴笑杰,姜晓乐,阳耀月..氮掺杂多孔碳包覆铁纳米粒子催化剂用于高效碱性介质中氧还原反应[J].电化学,2023,29(5):12-23,12.基金项目
This work was supported by the National Natu-ral Science Foundation of China(Grants 22002121,22172121),and the National Undergraduate Training Program for Innovation and Entrepre-neurship(Grant S202210656087). （Grants 22002121,22172121）
