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Unsaturated edge-anchored Ni single atoms on porous microwave exfoliated graphene oxide for electrochemical CO2

文献类型：期刊论文

作者Cheng, Yi4,5,6; Zhao, Shiyong5,6; Li, Haobo7; He, Shuai5,6; Veder, Jean-Pierre8; Johannessen, Bernt9; Xiao, Jianping7; Lu, Shanfu10; Pan, Jian5,6; Chisholm, Mattew F.1
刊名APPLIED CATALYSIS B-ENVIRONMENTAL
出版日期2019-04-01
卷号243页码:294-303
关键词Ni single-atom catalysts Edge-anchored Defects Electrochemical CO2 reduction Density functional simulation
ISSN号0926-3373
DOI10.1016/j.apcatb.2018.10.046
通讯作者Yang, Shi-Ze(shize@bnl.gov) ; Liu, Chang(cliu@imr.ac.cn) ; Jiang, San Ping(S.Jiang@curtin.edu.au)
英文摘要Supported single atom catalysts (SACs), emerging as a new class of catalytic materials, have been attracting increasing interests. Here we developed a Ni SAC on microwave exfoliated graphene oxide (Ni-N-MEGO) to achieve single atom loading of similar to 6.9 wt%, significantly higher than previously reported SACs. The atomically dispersed Ni atoms, stabilized by coordination with nitrogen, were found to be predominantly anchored along the edges of nanopores (< 6 nm) using a combination of X-ray absorption spectroscopy (XAS) and aberration corrected scanning transmission electron microscopy (AC-STEM). The Ni-N-MEGO exhibits an onset over potential of 0.18 V, and a current density of 53.6 mA mg(-1) at overpotential of 0.59 V for CO2 reduction reaction (CO2RR), representing one of the best non-precious metal SACs reported so far in the literature. Density functional theory (DFT) calculations suggest that the electrochemical CO2-to-CO conversion occurs more readily on the edge-anchored unsaturated nitrogen coordinated Ni single atoms that lead to enhanced activity toward CO2RR.
资助项目Australian Research Council[DP150102044] ; Australian Research Council[DP180100731] ; Australian Research Council[DP180100568] ; Australian Research Council[LE120100026] ; U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Science and Engineering ; ORNL's Center for Nanophase Materials Sciences - Scientific User Facilities Division of U.S. Department of Energy ; National Natural Science Foundation of China[51521091]
WOS研究方向Chemistry ; Engineering
语种英语
WOS记录号WOS:000453616800031
出版者ELSEVIER SCIENCE BV
资助机构Australian Research Council ; U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Science and Engineering ; ORNL's Center for Nanophase Materials Sciences - Scientific User Facilities Division of U.S. Department of Energy ; National Natural Science Foundation of China
源URL[http://ir.imr.ac.cn/handle/321006/130797]  
专题金属研究所_中国科学院金属研究所
通讯作者Yang, Shi-Ze; Liu, Chang; Jiang, San Ping
作者单位1.Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
3.Columbia Univ, Dept Chem Engn, New York, NY 10027 USA
4.Cent S Univ, Sch Met & Environm, Dept Environm Engn, Changsha 410083, Hunan, Peoples R China
5.Curtin Univ, Fuels & Energy Technol Inst, Perth, WA 6102, Australia
6.Curtin Univ, Western Australia Sch Mines Minerals Energy & Che, Perth, WA 6102, Australia
7.Westlake Univ, Westlake Inst Adv Study, Inst Nat Sci, Hangzhou 310024, Zhejiang, Peoples R China
8.Curtin Univ, John de Laeter Ctr, Perth, WA 6102, Australia
9.Australian Synchrotron, Clayton, Vic 3168, Australia
10.Beihang Univ, Sch Space & Environm, Beijing Key Lab Bioinspired Energy Mat & Devices, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Cheng, Yi,Zhao, Shiyong,Li, Haobo,et al. Unsaturated edge-anchored Ni single atoms on porous microwave exfoliated graphene oxide for electrochemical CO2[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2019,243:294-303.
APA Cheng, Yi.,Zhao, Shiyong.,Li, Haobo.,He, Shuai.,Veder, Jean-Pierre.,...&Jiang, San Ping.(2019).Unsaturated edge-anchored Ni single atoms on porous microwave exfoliated graphene oxide for electrochemical CO2.APPLIED CATALYSIS B-ENVIRONMENTAL,243,294-303.
MLA Cheng, Yi,et al."Unsaturated edge-anchored Ni single atoms on porous microwave exfoliated graphene oxide for electrochemical CO2".APPLIED CATALYSIS B-ENVIRONMENTAL 243(2019):294-303.

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来源：金属研究所

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