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Ni-Assisted Low Temperature Synthesis of MoCxwith Enhanced HER Activity
Zhou, Yajun1,2; Huang, Weimin1; Zhang, Xiaohua1,2; Wang, Min1,2; Zhang, Lingxia1; Shi, Jianlin1
2017
Source PublicationChemistry - A European Journal
ISSN09476539
Volume23Issue:67Pages:17029-17036
AbstractHere we report a novel one-pot approach to synthesize MoCxcatalysts at much lowered temperature for hydrogen evolution reaction (HER) in acidic solution. A room-temperature co-precipitation reaction among Ni2+, MoO42−and 2-methylimidazole in an aqueous solution produced a Mo−Ni−imidazole complex, which was used as the precursor to fabricate MoCx. The morphological and chemical properties of the obtained MoCxaffected by calcination and other additive metal sources (like Fe, Co, Cu) were investigated in detail. We demonstrated that Ni−Mo alloying took place prior to MoCxformation during heating, which catalyzed the crystallization of MoCxat relatively low temperature. The MoCx/Ni-650 catalyst exhibited a quite low overpotential of 172 mV at 20 mA cm−2. The high performance originates from the synergistic effect between MoCxand Ni−Mo alloy, high ratio of Mo3+/Mo2+, as well as high electrochemically active surface area and low charge-transfer resistance. This work would open a new way to the design and fabrication of other transition-metal carbide catalysts. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
DOI10.1002/chem.201703040
EI Accession Number20174504379976
EI KeywordsMolybdenum compounds
EI Classification Number531 Metallurgy and Metallography - 543.3 Molybdenum and Alloys - 548.1 Nickel - 641.1 Thermodynamics - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 804.2 Inorganic Compounds
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/25431
Collection中国科学院上海硅酸盐研究所
Affiliation1.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai; 200050, China;
2.University of Chinese Academy of Sciences, Beijing; 100049, China
Recommended Citation
GB/T 7714
Zhou, Yajun,Huang, Weimin,Zhang, Xiaohua,et al. Ni-Assisted Low Temperature Synthesis of MoCxwith Enhanced HER Activity[J]. Chemistry - A European Journal,2017,23(67):17029-17036.
APA Zhou, Yajun,Huang, Weimin,Zhang, Xiaohua,Wang, Min,Zhang, Lingxia,&Shi, Jianlin.(2017).Ni-Assisted Low Temperature Synthesis of MoCxwith Enhanced HER Activity.Chemistry - A European Journal,23(67),17029-17036.
MLA Zhou, Yajun,et al."Ni-Assisted Low Temperature Synthesis of MoCxwith Enhanced HER Activity".Chemistry - A European Journal 23.67(2017):17029-17036.
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