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题名: A nickel nanocatalyst within a h-BN shell for enhanced hydrogen oxidation reactions
作者: Gao, Lijun1, 2;  Wang, Ying3;  Li, Haobo1;  Li, Qihao3;  Ta, Na1;  Zhuang, Lin3;  Fu, Qiang1;  Bao, Xinhe1
刊名: CHEMICAL SCIENCE
发表日期: 2017-08-01
DOI: 10.1039/c7sc01615h
卷: 8, 期:8, 页:5728-5734
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: The development of low-cost and high-performance electrocatalysts remains a challenge for the hydrogen oxidation reaction (HOR) in alkaline membrane fuel cells. Here, we have reported novel Ni@h-BN core-shell nanocatalysts consisting of nickel nanoparticles encapsulated in few-layer h-BN shells. The Ni@hBN catalysts exhibit an improved HOR performance compared with the bare Ni nanoparticles. In situ characterization experiments and density functional theory calculations indicate that the interactions of the O, H, and OH species with the Ni surface under the h-BN shell are weakened, which helps to maintain the active metallic Ni phase both in air and in the electrolyte and strengthen the HOR processes occurring at the h-BN/ Ni interfaces. These results suggest a new route for designing high-performance non-noble metal electrocatalysts with encapsulating two-dimensional material overlayers for HOR reactions.
关键词[WOS]: HEXAGONAL BORON-NITRIDE ;  ALKALINE POLYMER ELECTROLYTE ;  CHEMICAL-VAPOR-DEPOSITION ;  METAL-CATALYZED REACTIONS ;  FUEL-CELL APPLICATIONS ;  2-DIMENSIONAL MATERIALS ;  CONFINED CATALYSIS ;  SURFACE-CHEMISTRY ;  CARBON NANOTUBES ;  GRAPHENE COVER
语种: 英语
WOS记录号: WOS:000406103100058
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/151902
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, iChEM, Dalian 116023, Peoples R China
2.Univ Sci & Technol China, Dept Chem Phys, Hefei 230026, Anhui, Peoples R China
3.Wuhan Univ, Inst Adv Studies, Coll Chem & Mol Sci, Hubei Key Lab Electrochem Power Sources, Wuhan 430072, Hubei, Peoples R China

Recommended Citation:
Gao, Lijun,Wang, Ying,Li, Haobo,et al. A nickel nanocatalyst within a h-BN shell for enhanced hydrogen oxidation reactions[J]. CHEMICAL SCIENCE,2017,8(8):5728-5734.
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