气候变化领域集成服务门户(CCPortal): Highly efficient hydrogen evolution from seawater by a low-cost and stable CoMoP@C electrocatalyst superior to Pt/C

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DOI	10.1039/c6ee03768b
	Highly efficient hydrogen evolution from seawater by a low-cost and stable CoMoP@C electrocatalyst superior to Pt/C
	Ma Y.-Y.; Wu C.-X.; Feng X.-J.; Tan H.-Q.; Yan L.-K.; Liu Y.; Kang Z.-H.; Wang E.-B.; Li Y.-G.
发表日期	2017
ISSN	17545692
起始页码	788
结束页码	798
卷号	10 期号:3
英文摘要	The hydrogen evolution reaction (HER) based on water electrolysis is a promising strategy for hydrogen energy production, in which the key point is seeking low-cost, high efficiency and stable electrocatalysts. Currently, the most efficient electrocatalysts for the HER are Pt-based catalysts (especially commercial Pt/C), but the low abundance and high cost of Pt hinder their widespread application. Herein, we demonstrate that a cobalt molybdenum phosphide nanocrystal coated by a few-layer N-doped carbon shell (CoMoP@C) is an excellent substitute for the HER. CoMoP@C is prepared by a one-step pyrolysis method on a large scale with polyoxometalate (POM) as a molecular platform. The catalytic activity of CoMoP@C is close to that of commercial 20% Pt/C under pH = 0-1 conditions and superior to that of 20% Pt/C under pH = 2-14 conditions at high overpotential (e.g. η > 240 mV at pH = 2.2). In real seawater, CoMoP@C exhibits stable HER performance with a high Faradaic efficiency (FE) of 92.5%, while the HER activity of 20% Pt/C dramatically decreases after 4 h. The remarkable HER performance of CoMoP@C should be attributed to the low free energy of H on the central CoMoP crystalline core and the multiple functions of the outer N-doped C shell (especially the strong H+ absorption behavior). This work may provide new options for the design and preparation of promising HER electrocatalysts superior to Pt/C, which can be used directly in seawater. © The Royal Society of Chemistry 2017.
英文关键词	Carbon; Catalyst activity; Costs; Doping (additives); Electrolysis; Energy efficiency; Free energy; Hydrogen; Platinum; Platinum alloys; Seawater; Absorption behaviors; Cobalt-molybdenum; Faradaic efficiencies; Hydrogen evolution; Hydrogen evolution reactions; Molecular platform; Multiple function; Water electrolysis; Electrocatalysts; carbon; catalyst; cobalt; electrochemical method; electrokinesis; energy efficiency; hydrogen; inorganic compound; inorganic phosphorus; molybdenum; nanoparticle; performance assessment; platinum; seawater
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190508
作者单位	Key Laboratory of Polyoxometalate Science of the Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun, 130024, China; Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou, 215123, China
推荐引用方式 GB/T 7714	Ma Y.-Y.,Wu C.-X.,Feng X.-J.,et al. Highly efficient hydrogen evolution from seawater by a low-cost and stable CoMoP@C electrocatalyst superior to Pt/C[J],2017,10(3).
APA	Ma Y.-Y..,Wu C.-X..,Feng X.-J..,Tan H.-Q..,Yan L.-K..,...&Li Y.-G..(2017).Highly efficient hydrogen evolution from seawater by a low-cost and stable CoMoP@C electrocatalyst superior to Pt/C.Energy & Environmental Science,10(3).
MLA	Ma Y.-Y.,et al."Highly efficient hydrogen evolution from seawater by a low-cost and stable CoMoP@C electrocatalyst superior to Pt/C".Energy & Environmental Science 10.3(2017).