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题名: Nitrogen-doped porous carbon derived from Fe-MIL nanocrystals as an electrocatalyst for efficient oxygen reduction
作者: Yang, Limeng1, 2;  Bai, Yangzhi1, 2;  Zhang, Hongjie1, 2;  Geng, Jiangtao1;  Shao, Zhigang1;  Yi, Baolian1
刊名: RSC ADVANCES
发表日期: 2017
DOI: 10.1039/c6ra27834e
卷: 7, 期:36, 页:22610-22618
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: Exploring cheap and stable electrocatalysts to replace Pt for the oxygen reduction reaction (ORR) is now the key issue for the large-scale application of fuel cells. Herein, we report a novel mesoporous carbon material prepared by one-step pyrolysis of a dicyandiamide (DCD)-doped iron-based metal organic framework (MOF) compound-Materiaux de l'Institute Lavosier-101(Fe) (MIL-101(Fe)). The as-prepared nitrogen mesoporous carbon (MIL-5 DCD-800) is characterized by transmission electron microscopy (TEM), Xray powder diffraction (XRD), N-2 sorption isotherms and X-ray photoelectron spectroscopy. MIL-5 DCD-800 shows an onset potential of 1.08 V (vs. RHE) and a half-wave potential of 0.86 V (vs. RHE) in 0.1 M KOH, which are similar to those of commercial Pt/C (1.05 V@ 0.05 mA cm(-2)). Furthermore, the electrocatalyst also possesses a much better stability and resistance to methanol crossover than Pt/C. This excellent performance is attributable to the presence of pyridinic- and graphitic-N together with abundant Fe active sites that promotes the four-electron process in the ORR. High pore volume and appropriate mesopores boost the mass transfer and reactivity during electrocatalysis.
关键词[WOS]: NONPRECIOUS METAL ELECTROCATALYSTS ;  ENCAPSULATED IRON NANOPARTICLES ;  ELECTROLYTE FUEL-CELLS ;  HIGHLY EFFICIENT ;  RECENT PROGRESS ;  CATALYSTS ;  GRAPHENE ;  COMPOSITE ;  FRAMEWORKS ;  MECHANISM
语种: 英语
WOS记录号: WOS:000400157700075
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/152006
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, DICP, Dalian Natl Labs Clean Energy DNL, 457 Zhongshan Rd, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China

Recommended Citation:
Yang, Limeng,Bai, Yangzhi,Zhang, Hongjie,et al. Nitrogen-doped porous carbon derived from Fe-MIL nanocrystals as an electrocatalyst for efficient oxygen reduction[J]. RSC ADVANCES,2017,7(36):22610-22618.
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