Boosting the hydrogen evolution performance of ruthenium clusters through synergistic coupling with cobalt phosphide

doi:10.1039/c7ee03603e

CORC > 金属研究所 > 中国科学院金属研究所

	Boosting the hydrogen evolution performance of ruthenium clusters through synergistic coupling with cobalt phosphide
	Xu, JY ; Liu, TF ; Li, JJ ; Li, B 1,2; Liu, YF ; Zhang, BS ; Xiong, DH ; Amorim, I ; Li, W ; Liu, LF
刊名	ENERGY & ENVIRONMENTAL SCIENCE
	2018-07-01
卷号	11 期号:7 页码:1819-1827
ISSN号	1754-5692
DOI	10.1039/c7ee03603e
英文摘要	In this article, we for the first time report the synthesis and electrocatalytic properties of ruthenium cobalt phosphide hybrid clusters for the hydrogen evolution reaction (HER). Two types of catalysts are investigated: wet chemical reduction of Ru3+ on pre-formed cobalt phosphide (CoP) nanoparticles results in ruthenium-cobalt phosphide side-by-side structures (Ru/CoP); while phosphorizing chemically reduced RuCo alloy leads to the formation of hybrid ruthenium cobalt phosphide (RuCoP) clusters. Compared to pristine Ru clusters, both Ru/CoP and RuCoP show significantly improved HER performance in both acidic and alkaline solutions. In particular, the hybrid RuCoP clusters demonstrate a considerably low overpotential ((10)) of 11 mV at -10 mA cm(-2) and a high turnover frequency (TOF) of 10.95 s(-1) at = 100 mV in 0.5 M H2SO4. Even in 1.0 M KOH the excellent HER activity of the RuCoP clusters remains, with a very low (10) of 23 mV and exceptionally high TOF value of 7.26 s(-1) at = 100 mV. Moreover, the RuCoP catalysts can sustain galvanostatic electrolysis in both acidic and alkaline solutions at -10 mA cm(-2) for 150 h with little degradation, showing better catalytic stability than the state-of-the-art commercial Pt/C catalysts. Our density functional theory (DFT) calculations indicate that the RuCoP hybrid exhibits a hydrogen adsorption energy very close to that of Pt and water and -OH adsorption energies distinct from pristine Ru, which reasonably explain the experimentally observed excellent HER activities and highlight the importance of synergistic coupling with cobalt phosphide to boost the HER performance of ruthenium.
学科主题	Chemistry, Multidisciplinary ; Energy & Fuels ; Engineering, Chemical ; Environmental Sciences
语种	英语
WOS记录号	WOS:000438392400017
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/80116]
专题	金属研究所_中国科学院金属研究所
作者单位	1.Int Iberian Nanotechnol Lab INL, Av Mestre Jose Veiga, P-4715330 Braga, Portugal 2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 4.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Xu, JY,Liu, TF,Li, JJ,et al. Boosting the hydrogen evolution performance of ruthenium clusters through synergistic coupling with cobalt phosphide[J]. ENERGY & ENVIRONMENTAL SCIENCE,2018,11(7):1819-1827.
APA	Xu, JY.,Liu, TF.,Li, JJ.,Li, B.,Liu, YF.,...&Liu, LF.(2018).Boosting the hydrogen evolution performance of ruthenium clusters through synergistic coupling with cobalt phosphide.ENERGY & ENVIRONMENTAL SCIENCE,11(7),1819-1827.
MLA	Xu, JY,et al."Boosting the hydrogen evolution performance of ruthenium clusters through synergistic coupling with cobalt phosphide".ENERGY & ENVIRONMENTAL SCIENCE 11.7(2018):1819-1827.