热门
Coordinatively unsaturated nickel-nitrogen sites towards selective and high-rate CO2 electroreduction
文献类型：期刊论文
| 作者 | Yan, CC; Li, HB; Ye, YF; Wu, HH; Cai, F; Si, R; Xiao, JP; Miao, S; Xie, SH; Yang, F |
| 刊名 | ENERGY & ENVIRONMENTAL SCIENCE
 |
| 出版日期 | 2018 |
| 卷号 | 11期号:5页码:1204-1210 |
| 关键词 | X-ray Photoelectron-spectroscopy Electrochemical Co2 Carbon-dioxide Reduction Nanoparticles Graphene Oxygen |
| ISSN号 | 1754-5692 |
| DOI | 10.1039/c8ee00133b |
| 文献子类 | 期刊论文 |
| 英文摘要 | High 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. |
| 语种 | 英语 |
| WOS记录号 | WOS:000432599100007 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/28950]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：上海应用物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。