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题名: Highly active and durable non-precious-metal catalysts encapsulated in carbon nanotubes for hydrogen evolution reaction
作者: Deng, Jiao1;  Ren, Pengju1;  Deng, Dehui1;  Yu, Liang1;  Yang, Fan1;  Bao, Xinhe1
刊名: ENERGY & ENVIRONMENTAL SCIENCE
发表日期: 2014-06-01
DOI: 10.1039/c4ee00370e
卷: 7, 期:6, 页:1919-1923
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology ;  Life Sciences & Biomedicine
类目[WOS]: Chemistry, Multidisciplinary ;  Energy & Fuels ;  Engineering, Chemical ;  Environmental Sciences
研究领域[WOS]: Chemistry ;  Energy & Fuels ;  Engineering ;  Environmental Sciences & Ecology
英文摘要: Employing a low-cost and highly efficient electrocatalyst to replace Pt-based catalysts for hydrogen evolution reaction (HER) has attracted increasing interest in renewable energy research. Earth-abundant transition metals such as Fe, Co and Ni have been investigated as promising alternatives in alkaline electrolytes. However, these non-precious- metal catalysts are not stable in acids, excluding their application in the acidic solid polymer electrolyte (SPE). Herein, we report a strategy to encapsulate 3d transition metals Fe, Co and the FeCo alloy into nitrogen-doped carbon nanotubes (CNTs) and investigated their HER activity in acidic electrolytes. The optimized catalysts exhibited long-term durability and high activity with only an similar to 70 mV onset overpotential vs. RHE which is quite close to that of the commercial 40% Pt/C catalyst, demonstrating the potential for the replacement of Pt-based catalysts. Density functional theory (DFT) calculations indicated that the introduction of metal and nitrogen dopants can synergistically optimize the electronic structure of the CNTs and the adsorption free energy of H atoms on CNTs, and therefore promote the HER with a Volmer-Heyrovsky mechanism.
关键词[WOS]: MOS2 ULTRATHIN NANOSHEETS ;  EDGE SITES ;  ELECTROCATALYTIC MATERIALS ;  MOLYBDENUM ;  IRON ;  COBALT ;  OXYGEN ;  REDUCTION ;  OXIDATION ;  EFFICIENT
语种: 英语
WOS记录号: WOS:000336831700013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145783
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

Recommended Citation:
Deng, Jiao,Ren, Pengju,Deng, Dehui,et al. Highly active and durable non-precious-metal catalysts encapsulated in carbon nanotubes for hydrogen evolution reaction[J]. ENERGY & ENVIRONMENTAL SCIENCE,2014,7(6):1919-1923.
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