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题名: Graphene-supported iron-based nanoparticles encapsulated in nitrogen-doped carbon as a synergistic catalyst for hydrogen evolution and oxygen reduction reactions
作者: Wang, Jing1, 2;  Wang, Guoxiong1;  Miao, Shu3;  Li, Jiayuan1, 2;  Bao, Xinhe1, 3
刊名: FARADAY DISCUSSIONS
发表日期: 2014
DOI: 10.1039/c4fd00123k
卷: 176, 页:135-151
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: Electrolyzers and fuel cells have been extensively investigated as promising solutions for renewable energy storage and conversion. Hydrogen evolution reaction (HER) and oxygen reduction reaction (ORR) are important electrocatalytic processes in electrolyzers and fuel cells. Exploring efficient non-precious metal catalysts for HER and ORR in acidic medium remains a great challenge. Herein, we report that graphene-supported iron-based nanoparticles encapsulated in a nitrogen-doped carbon (Fe@N-C) hybrid material acts as an efficient HER and ORR catalyst. The hybrid material was synthesized by pyrolysis of graphene oxide and ammonia ferric citrate followed by acid-leaching. During the pyrolysis, nitrogen was doped into a graphene lattice, and the carbon nanoshell grown on graphene effectively suppressed the stacking of graphene sheets, exposing more active sites to reactants. The hybrid material showed higher electrocatalytic activities than graphene sheets or Fe@N-C alone, which is probably attributed to the synergetic role of nitrogen-doped graphene and Fe@N-C towards the electrocatalytic reactions.
关键词[WOS]: ENHANCED ELECTROCATALYTIC ACTIVITY ;  ENERGY-STORAGE SYSTEMS ;  PEM FUEL-CELLS ;  EFFICIENT ELECTROCATALYST ;  NANOTUBES ;  NANOMATERIALS ;  MOLYBDENUM ;  ALLOY ;  SUPERCAPACITORS ;  NANOSHEETS
语种: 英语
WOS记录号: WOS:000350894400010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145655
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, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China

Recommended Citation:
Wang, Jing,Wang, Guoxiong,Miao, Shu,et al. Graphene-supported iron-based nanoparticles encapsulated in nitrogen-doped carbon as a synergistic catalyst for hydrogen evolution and oxygen reduction reactions[J]. FARADAY DISCUSSIONS,2014,176:135-151.
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