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A Redox-anchoring Approach to Well-dispersed MoCx/C Nanocomposite for Efficient Electrocatalytic Hydrogen Evolution
Zhou, Yajun1,2; Zhang, Lingxia1; Huang, Weimin1; Wang, Min1,2; Chen, Lisong3; Cui, Xiangzhi1; Zhang, Xiaohua1,2; Shi, Jianlin1,4
2017
Source PublicationChemistry - An Asian Journal
ISSN18614728
Volume12Issue:4Pages:446-452
AbstractHere we report a redox-anchoring strategy for synthesizing a non-noble metal carbide (MoCx) nanocomposite electrocatalyst for water electrolysis in acidic media, using glucose and ammonium heptamolybdate as carbon and Mo precursors, respectively, without the need of gaseous carbon sources such as CH4. Specifically, the aldehyde groups of glucose are capable of reducing Mo6+to Mo4+(MoO2), and thus molybdenum species can be well anchored by a redox reaction onto a carbon matrix to prevent the aggregation of MoCxnanoparticles during the following carbonization process. The morphology and chemical composition of the electrocatalysts were well characterized by BSE-SEM, TEM, XRD and XPS. The obtained MoCx−2 sample showed a reasonably high hydrogen evolution reaction (HER) activity and excellent stability in an acidic electrolyte, and its overpotential required for a current density output of 20 mA cm−2is as low as 193 mV. Such a prominent performance is ascribed to the excellent dispersity and nano-size, and the large reactive surface area of MoCxparticles. This work may open a new way to the design and fabrication of other non-noble metal carbide nanocatalysts for various electrochemical applications. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
DOI10.1002/asia.201601528
EI Accession Number20170403278739
EI KeywordsElectrocatalysts
EI Classification Number547.1 Precious Metals - 761 Nanotechnology - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 933 Solid State Physics
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/25895
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 Sciences, Shanghai; 200050, China;
2.University of Chinese Academy of Sciences, Beijing; 100049, China;
3.Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai; 200062, China;
4.Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing; 211800, China
Recommended Citation
GB/T 7714
Zhou, Yajun,Zhang, Lingxia,Huang, Weimin,et al. A Redox-anchoring Approach to Well-dispersed MoCx/C Nanocomposite for Efficient Electrocatalytic Hydrogen Evolution[J]. Chemistry - An Asian Journal,2017,12(4):446-452.
APA Zhou, Yajun.,Zhang, Lingxia.,Huang, Weimin.,Wang, Min.,Chen, Lisong.,...&Shi, Jianlin.(2017).A Redox-anchoring Approach to Well-dispersed MoCx/C Nanocomposite for Efficient Electrocatalytic Hydrogen Evolution.Chemistry - An Asian Journal,12(4),446-452.
MLA Zhou, Yajun,et al."A Redox-anchoring Approach to Well-dispersed MoCx/C Nanocomposite for Efficient Electrocatalytic Hydrogen Evolution".Chemistry - An Asian Journal 12.4(2017):446-452.
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