CAS OpenIR  > 中科院上海应用物理研究所2011-2018年
Coordinatively unsaturated nickel-nitrogen sites towards selective and high-rate CO2 electroreduction
Yan, CC; Li, HB; Ye, YF; Wu, HH; Cai, F; Si, R; Xiao, JP; Miao, S; Xie, SH; Yang, F; Li, YS; Wang, GX; Bao, XH
2018
Source PublicationENERGY & ENVIRONMENTAL SCIENCE
ISSN1754-5692
Volume11Issue:5Pages:1204-1210
Subtype期刊论文
AbstractHigh Faradaic efficiency and appreciable current density are essential for future applications of the electrochemical CO2 reduction reaction (CO2RR). However, these goals are difficult to achieve simultaneously due to the severe side reaction - the hydrogen evolution reaction (HER). Herein, we successfully synthesized coordinatively unsaturated nickel-nitrogen (Ni-N) sites doped within porous carbon with a nickel loading as high as 5.44 wt% by pyrolysis of Zn/Ni bimetallic zeolitic imidazolate framework-8. Over the Ni-N composite catalysts, the CO current density increases with the overpotential and reaches 71.5 +/- 2.9 mA cm(-2) at -1.03 V (vs. a reversible hydrogen electrode, RHE), while maintaining a high CO Faradaic efficiency of 92.0-98.0% over a wide potential range of -0.53 to -1.03 V (vs. the RHE). Density functional theory calculations suggest that the CO2RR occurs more easily than the HER over the coordinatively unsaturated Ni-N site. Therefore, highly doped and coordinatively unsaturated Ni-N sites achieve high current density and Faradaic efficiency of the CO2RR simultaneously, breaking current limits in metal-nitrogen composite catalysts.
KeywordX-ray Photoelectron-spectroscopy Electrochemical Co2 Carbon-dioxide Reduction Nanoparticles Graphene Oxygen
DOI10.1039/c8ee00133b
Indexed BySCI
Language英语
WOS IDWOS:000432599100007
Citation statistics
Cited Times:29[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/28950
Collection中科院上海应用物理研究所2011-2018年
Affiliation1.Yan, CC
2.Li, HB
3.Ye, YF
4.Wu, HH
5.Cai, F
6.Si, R
7.Xiao, JP
8.Miao, S
9.Xie, SH
10.Yang, F
11.Li, YS
12.Wang, GX
13.Bao, XH
Recommended Citation
GB/T 7714
Yan, CC,Li, HB,Ye, YF,et al. Coordinatively unsaturated nickel-nitrogen sites towards selective and high-rate CO2 electroreduction[J]. ENERGY & ENVIRONMENTAL SCIENCE,2018,11(5):1204-1210.
APA Yan, CC.,Li, HB.,Ye, YF.,Wu, HH.,Cai, F.,...&Bao, XH.(2018).Coordinatively unsaturated nickel-nitrogen sites towards selective and high-rate CO2 electroreduction.ENERGY & ENVIRONMENTAL SCIENCE,11(5),1204-1210.
MLA Yan, CC,et al."Coordinatively unsaturated nickel-nitrogen sites towards selective and high-rate CO2 electroreduction".ENERGY & ENVIRONMENTAL SCIENCE 11.5(2018):1204-1210.
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