文献类型：期刊文献

英文题名：Molecularly Dispersed Cobalt Phthalocyanine Mediates Selective and Durable CO2 Reduction in a Membrane Flow Cell

作者：Wu, Xuefeng[1];Sun, Ji Wei[1];Liu, Peng Fei[1];Zhao, Jia Yue[1];Liu, Yuanwei[1];Guo, Lisheng[2];Dai, Sheng[2];Yang, Hua Gui[1];Zhao, Huijun[3]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Engn Res Ctr Hierarch Nanomat, Key Lab Ultrafine Mat,Minist Educ, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Inst Fine Chem, Scientist Joint Res Ctr,Key Lab Adv Mat & Feringa, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Griffith Univ, Ctr Catalysis & Clean Energy, Gold Coast Campus, Southport, Qld 4222, Australia

年份：2022

卷号：32

期号：11

外文期刊名：ADVANCED FUNCTIONAL MATERIALS

收录：;EI(收录号：20214411102173);WOS:【SCI-EXPANDED(收录号:WOS:000712117100001)】；

基金：This work was financially supported by the National Natural Science Funds for Distinguished Young Scholars (51725201), the International (Regional) Cooperation and Exchange Projects of the National Natural Science Foundation of China (51920105003), the Innovation Program of Shanghai Municipal Education Commission (E00014), the National Natural Science Foundation of China (51902105), Shanghai Engineering Research Center of Hierarchical Nanomaterials (18DZ2252400), Shanghai Sailing Program (19YF1411600), and Shanghai Rising-star Program (20QA1402400). The authors acknowledge the Fundamental Research Funds for the Central Universities (JKD01211519, JKVJ1211022) and the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning. The authors also thank the Frontiers Science Center for Materiobiology and Dynamic Chemistry. The authors also thank the crew of the BL14W1 beamline at the Shanghai Synchrotron Radiation Facility (SSRF) for their constructive assistance with the XAFS measurements and data analyses. Additional support was provided by the Feringa Nobel Prize Scientist Joint Research Center.

语种：英文

外文关键词：cobalt phthalocyanine; industrial-current CO; (2) electrolysis; membrane electrode assembly; molecularly dispersed catalysts

摘要：High-rate electrochemical CO2-to-CO conversion provides a favorable strategy for carbon neutrality. Molecular catalysts, especially those with isolated metal active centers, are known to be the efficient CO2-to-CO electrocatalysts due to their high selectivity and outstanding instinct activity; however, the controllable scale-up synthesis and durable utilization at industrial current densities still remain a challenge. Here, it is developed a molecularly dispersed cobalt phthalocyanine loaded on carbon nanotube for high-current long-term CO2-to-CO electrolysis. The resultant catalyst exhibits a high CO selectivity with a maximum Faradaic efficiency of 97% and performs a current density of -200 mA cm(-2) in a flow cell with a TOF of 83.9 s(-1), which is among the best of CO-selective electrocatalysts. With a series of impregnation loading experiments, the process of molecular-dispersion or aggregation is investigated. In addition, the application of selective and durable electrolysis at a current of 0.25 A is realized up to 38.5 h in a scale-up MEA configuration. Subsequent characterization shows robust durability closely related to the dispersion of CoPc. This study provides a triumph to catalyze commercial-scale CO production using molecularly dispersed phthalocyanine electrocatalysts.