Directly converting Fe-doped metal organic frameworks into highly active   and stable Fe-N-C catalysts for oxygen reduction in acid

doi:10.1016/j.nanoen.2016.04.042

CORC > 北京大学 > 化学与分子工程学院

	Directly converting Fe-doped metal organic frameworks into highly active and stable Fe-N-C catalysts for oxygen reduction in acid
	Wang, Xiaojuan ; Zhang, Hanguang ; Lin, Honghong ; Gupta, Shiva ; Wang, Cheng ; Tao, Zixu ; Fu, He ; Wang, Teng ; Zheng, Jie ; Wu, Gang ; Li, Xingguo
刊名	NANO ENERGY
	2016
关键词	Metal-organic frameworks Energy conversion Electrocatalysis Oxygen reduction Nonprecious metal catalysts Fuel cells PEM FUEL-CELLS CATHODE CATALYSTS NONPLATINUM CATALYSTS FE/N/C-CATALYSTS ELECTROCATALYSTS CARBON IRON ELECTROLYTE PERFORMANCE GRAPHENE
DOI	10.1016/j.nanoen.2016.04.042
英文摘要	Compared to extensively studied oxygen reduction reaction (ORR) catalysis in alkaline media, development of highly active and stable nonprecious metal catalysts (NPMCs) to replace Pt in acidic electrolytes remains grand challenges. Among currently studied catalysts, the Fe-N-C formulation holds the greatest promise for the ORR in acid. Here, we report a new highly active and stable Fe-N-C catalyst featured with well-dispersed atomic Fe in porous carbon matrix. It was prepared through one single thermal conversion from Fe-doped ZIF-8, a metal-organic framework (MOF) containing Zn2+ and well-defined Fe-N-4 coordination. Unlike other Fe-N-C catalyst preparation, no additional tedious post-treatments such as acid leaching and the second heating treatment are required in this work. Notably, an O-2-free environment for preparing the Fe-doped ZIF-8 precursor is found to be crucial for yielding uniform Fe distribution into highly porous N-doped carbon matrix. The resulting new Fe-N-C catalyst exhibited exceptionally improved ORR activity with a very high half-wave potential (0.82 V vs. RHE) and sufficient potential cycling stability in acid. Opposite to previous observation, the highly active Fe-N-C catalyst is in the absence of any graphitized nanocarbons, which would lead to a new discussion in the field for understanding the role of carbon during the ORR electrocatalysis. (C) 2016 Elsevier Ltd. All rights reserved.; National Natural Science Foundation of China [U1201241, 11375020, 51431001, 21321001]; University at Buffalo (SUNY); NSF [CBET-1511528]; U.S. Department of Energy, Fuel Cell Technologies Office (FCTO) Incubator Program [DE-EE000696]; SCI(E); EI; ARTICLE; zhengjie@pku.edu.cn; gangwu@buffalo.edu; 110-119; 25
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/437115]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Wang, Xiaojuan,Zhang, Hanguang,Lin, Honghong,et al. Directly converting Fe-doped metal organic frameworks into highly active and stable Fe-N-C catalysts for oxygen reduction in acid[J]. NANO ENERGY,2016.
APA	Wang, Xiaojuan.,Zhang, Hanguang.,Lin, Honghong.,Gupta, Shiva.,Wang, Cheng.,...&Li, Xingguo.(2016).Directly converting Fe-doped metal organic frameworks into highly active and stable Fe-N-C catalysts for oxygen reduction in acid.NANO ENERGY.
MLA	Wang, Xiaojuan,et al."Directly converting Fe-doped metal organic frameworks into highly active and stable Fe-N-C catalysts for oxygen reduction in acid".NANO ENERGY (2016).