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Metal Phthalocyanine-Derived Single-Atom Catalysts for Selective CO2 Electroreduction under High Current Densities.
ACS Appl Mater Interfaces. 2020 Jul 17 [Online ahead of print]AA

Abstract

Single-atom catalysts (SACs) with atomically dispersed metal sites in nitrogen-doped carbon matrices (M-N/C) have been identified as promising candidates for the electrocatalytic CO2 reduction reaction (CO2RR). However, recent studies aiming at economic viability have been inhibited by the low faradaic efficiency (FE) and instability under high current density. Herein, we report a series of SACs derived from cyano-substituted metal phthalocyanines (MePc-CN) in ZIFs (denoted as Me-SACs (Pc)). These phthalocyanine molecules enable the efficient construction of SACs, affording higher metal loading and less variation when compared with their counterparts from metal nitrates (denoted as Me-SACs (S)). Thus, Me-SACs (Pc) exhibit higher activities and selectivities than Me-SACs (S) in H-cell measurements. In gas-diffusion electrode (GDE) setups, the unstable Fe-SAC (Pc) shows only a 50% FE of CO (FEco) at -100 mA cm-2. In contrast, Ni-SAC (Pc) exhibits a higher FEco of >96% at current densities from -10 to -200 mA cm-2 and can stably operate for over 16 h at -200 mA cm-2. The performances of Ni-SAC (Pc) are comparable to those of precious metal catalysts and the best SACs reported so far, representing a promising candidate for practical electrolyzer devices for CO2RR.

Authors+Show Affiliations

School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China. Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China. Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China. Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen 518055, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32628446

Citation

Wang, Yang, et al. "Metal Phthalocyanine-Derived Single-Atom Catalysts for Selective CO2 Electroreduction Under High Current Densities." ACS Applied Materials & Interfaces, 2020.
Wang Y, Jiang Z, Zhang X, et al. Metal Phthalocyanine-Derived Single-Atom Catalysts for Selective CO2 Electroreduction under High Current Densities. ACS Appl Mater Interfaces. 2020.
Wang, Y., Jiang, Z., Zhang, X., Niu, Z., Zhou, Q., Wang, X., Li, H., Lin, Z., Zheng, H., & Liang, Y. (2020). Metal Phthalocyanine-Derived Single-Atom Catalysts for Selective CO2 Electroreduction under High Current Densities. ACS Applied Materials & Interfaces. https://doi.org/10.1021/acsami.0c08940
Wang Y, et al. Metal Phthalocyanine-Derived Single-Atom Catalysts for Selective CO2 Electroreduction Under High Current Densities. ACS Appl Mater Interfaces. 2020 Jul 17; PubMed PMID: 32628446.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Metal Phthalocyanine-Derived Single-Atom Catalysts for Selective CO2 Electroreduction under High Current Densities. AU - Wang,Yang, AU - Jiang,Zhan, AU - Zhang,Xiao, AU - Niu,Zeyu, AU - Zhou,Qinqi, AU - Wang,Xiaojun, AU - Li,Huan, AU - Lin,Zhichao, AU - Zheng,Hongzhi, AU - Liang,Yongye, Y1 - 2020/07/17/ PY - 2020/7/7/pubmed PY - 2020/7/7/medline PY - 2020/7/7/entrez KW - carbon dioxide reduction reaction KW - gas-diffusion electrode KW - metal phthalocyanine KW - single-atom catalysts KW - zeolitic imidazolate frameworks JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces N2 - Single-atom catalysts (SACs) with atomically dispersed metal sites in nitrogen-doped carbon matrices (M-N/C) have been identified as promising candidates for the electrocatalytic CO2 reduction reaction (CO2RR). However, recent studies aiming at economic viability have been inhibited by the low faradaic efficiency (FE) and instability under high current density. Herein, we report a series of SACs derived from cyano-substituted metal phthalocyanines (MePc-CN) in ZIFs (denoted as Me-SACs (Pc)). These phthalocyanine molecules enable the efficient construction of SACs, affording higher metal loading and less variation when compared with their counterparts from metal nitrates (denoted as Me-SACs (S)). Thus, Me-SACs (Pc) exhibit higher activities and selectivities than Me-SACs (S) in H-cell measurements. In gas-diffusion electrode (GDE) setups, the unstable Fe-SAC (Pc) shows only a 50% FE of CO (FEco) at -100 mA cm-2. In contrast, Ni-SAC (Pc) exhibits a higher FEco of >96% at current densities from -10 to -200 mA cm-2 and can stably operate for over 16 h at -200 mA cm-2. The performances of Ni-SAC (Pc) are comparable to those of precious metal catalysts and the best SACs reported so far, representing a promising candidate for practical electrolyzer devices for CO2RR. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/32628446/Metal_Phthalocyanine_Derived_Single_Atom_Catalysts_for_Selective_CO2_Electroreduction_under_High_Current_Densities L2 - https://doi.org/10.1021/acsami.0c08940 DB - PRIME DP - Unbound Medicine ER -
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