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Nanostructures Ni2P / MoP @ N - doping porous carbon for efficient hydrogen evolution over a broad pH range
Xu, Yuelong1,2; Yan, Meifang1,2,3; Liu, Zhan1,2; Wang, Jingyue1,2,4; Zhai, Zuozhao1,2; Ren, Bin1,2; Dong, Xiaoxi1,2,4; Miao, Junfeng1,2,4; Liu, Zhenfa1,2,4
2020-12-10
Source PublicationELECTROCHIMICA ACTA
ISSN0013-4686
Volume363Pages:11
AbstractGiven its clean energy and absence of exhaust gases, hydrogen is an ideal candidate for energy demand. Electrochemical hydrogen evolution reaction (HER) have attracted increasing attention, and non-precious metal compounds have been considered as next-generation catalysts to replace the traditional Pt-based catalysts in this reaction. This study adopts a novel sol-gel method of chitosan and formaldehyde to prepare an N-doped carbon matrix with Nickel phosphide (Ni2P) and Molybdenum phosphide (MoP) loading. Phytic acid is used as the P source to dissolve chitosan. The interface between Ni2P and MoP in the as-prepared catalysts facilitates HER with an excellent stability in a wide pH universal solution. The onset potentials of the catalyst are 300, 200, and 5 mV in 0.5 mol L-1 sulfuric acid, 1.0 mol L-1 phosphate buffer solution, and 1.0 mol L-1 potassium hydroxide, respectively, and the corresponding Tafel slopes are 63, 99, and 64 mV dec(-1). Density functional theory is adopted to support the experiment. Results suggest that the synergistic effect from the interface can obviously reduce the hydrogen adsorption free energy to benefit the adsorption/desorption. (C) 2020 Elsevier Ltd. All rights reserved.
KeywordPorous carbon matrix Transition metal phosphide Broad pH range Phase interface Hydrogen evolution
DOI10.1016/j.electacta.2020.137151
Language英语
WOS KeywordHIGHLY EFFICIENT ; HIGH-PERFORMANCE ; NICKEL FOAM ; ELECTROCATALYSTS ; CATALYSTS ; SINGLE ; CO ; SUPERCAPACITORS ; NANOPARTICLES ; NANOSHEETS
Funding ProjectScience and Technology Program of Hebei Academy of Sciences[20705] ; Science and Technology Program of Hebei Academy of Sciences[20706] ; Science and Technology Program of Hebei Academy of Sciences[201503]
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
Funding OrganizationScience and Technology Program of Hebei Academy of Sciences
WOS IDWOS:000588282800004
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/42603
Collection中国科学院过程工程研究所
Corresponding AuthorLiu, Zhenfa
Affiliation1.Hebei Acad Sci, Inst Energy Resources, Shijiazhuang 050081, Hebei, Peoples R China
2.Hebei Engn Res Ctr Water Saving Ind, Shijiazhuang 050081, Hebei, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100049, Peoples R China
4.Hebei Univ Technol, Sch Chem Engn & Technol, Tianjin 300000, Peoples R China
Recommended Citation
GB/T 7714
Xu, Yuelong,Yan, Meifang,Liu, Zhan,et al. Nanostructures Ni2P / MoP @ N - doping porous carbon for efficient hydrogen evolution over a broad pH range[J]. ELECTROCHIMICA ACTA,2020,363:11.
APA Xu, Yuelong.,Yan, Meifang.,Liu, Zhan.,Wang, Jingyue.,Zhai, Zuozhao.,...&Liu, Zhenfa.(2020).Nanostructures Ni2P / MoP @ N - doping porous carbon for efficient hydrogen evolution over a broad pH range.ELECTROCHIMICA ACTA,363,11.
MLA Xu, Yuelong,et al."Nanostructures Ni2P / MoP @ N - doping porous carbon for efficient hydrogen evolution over a broad pH range".ELECTROCHIMICA ACTA 363(2020):11.
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