Well-defined carbon polyhedrons prepared from nano metal-organic   frameworks for oxygen reduction

doi:10.1039/c4ta01656d

CORC > 北京大学 > 工学院

	Well-defined carbon polyhedrons prepared from nano metal-organic frameworks for oxygen reduction
	Xia, Wei ; Zhu, Jinghan ; Guo, Wenhan ; An, Li ; Xia, Dingguo ; Zou, Ruqiang
刊名	journal of materials chemistry a
	2014
关键词	ZEOLITIC IMIDAZOLATE FRAMEWORKS MEMBRANE FUEL-CELLS NANOPOROUS CARBON CO2 CAPTURE CATALYSTS ELECTROCATALYSTS POLYMER IRON GRAPHENE POLYANILINE
DOI	10.1039/c4ta01656d
英文摘要	We report a nanostructured electrocatalyst engineered from molecular design and morphology evolution. Using a typical Co-based metal-organic framework, ZIF-67, nanocrystals were precisely synthesized with tunable size and morphology. Nitrogen-doped carbon nano polyhedrons decorated with cobalt nanoparticles were fabricated via pyrolysis of ZIF-67 and the carbonized products inherited the nanosize and shape of the MOF precursor. The intense effect of size on the electrocatalytic activity and transport properties was systematically investigated. The catalyst derived from the smallest MOF (300 nm), exhibited superior performance towards oxygen reduction with an onset potential of 0.86 V and a half-wave potential of 0.71 V in acidic solution, which are comparable to the best carbon-based oxygen reduction reaction (ORR) catalysts. This work will pave the way for the development of MOF-derived energy materials in various fields such as fuel cells and Li-air batteries, and opens new avenues for the design of MOFs in electrochemical applications.; Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary; SCI(E); EI; 8; ARTICLE; rzou@pku.edu.cn; 30; 11606-11613; 2
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/154240]
专题	工学院
推荐引用方式 GB/T 7714	Xia, Wei,Zhu, Jinghan,Guo, Wenhan,et al. Well-defined carbon polyhedrons prepared from nano metal-organic frameworks for oxygen reduction[J]. journal of materials chemistry a,2014.
APA	Xia, Wei,Zhu, Jinghan,Guo, Wenhan,An, Li,Xia, Dingguo,&Zou, Ruqiang.(2014).Well-defined carbon polyhedrons prepared from nano metal-organic frameworks for oxygen reduction.journal of materials chemistry a.
MLA	Xia, Wei,et al."Well-defined carbon polyhedrons prepared from nano metal-organic frameworks for oxygen reduction".journal of materials chemistry a (2014).