气候变化领域集成服务门户(CCPortal): A systematic analysis of Cu-based membrane-electrode assemblies for CO2reduction through multiphysics simulation

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DOI	10.1039/d0ee01604g
	A systematic analysis of Cu-based membrane-electrode assemblies for CO2reduction through multiphysics simulation
	Weng L.-C.; Bell A.T.; Weber A.Z.
发表日期	2020
ISSN	17545692
起始页码	3592
结束页码	3606
卷号	13 期号:10
英文摘要	Copper-based membrane-electrode assemblies (Cu-MEAs) hold promise for increasing the energy efficiency for the electrochemical reduction of CO2 to C2+ products, while maintaining high current densities. However, fundamental understanding of Cu-MEAs is still limited compared to the wealth of knowledge available for aqueous-electrolyte Cu systems. Physics-based modeling can assist in the transfer of knowledge from aqueous to vapor-fed systems by deconvoluting the impacts of various physical processes and accelerating the optimization of Cu-MEAs. Here, we simulate Cu-MEA performance and describe how the change in cell architecture leads to changes in cell performance and optimization. Our results reveal nonuniformity of product distribution in the catalyst layer, allowing us to explore catalyst-layer properties as design parameters for increasing the energy efficiency of C2+ product formation. We discuss multiphase flow and water-management issues and show how membrane properties, specifically the electro-osmotic coefficient, affect the efficacy of feeding liquid water to hydrate the membrane. Finally, we explore tradeoffs associated with operating Cu-MEAs at 350 K in order to increase the supply of water and the preferential formation of products with higher activation energies (typically C2+ products). © The Royal Society of Chemistry.
英文关键词	Activation energy; Catalysts; Electrolytes; Electrolytic reduction; Energy efficiency; Knowledge management; Osmosis; Product design; Water management; Electrochemical reductions; High current densities; Membrane electrode assemblies; Multiphysics simulations; Osmotic coefficient; Physics-based modeling; Product distributions; Transfer of knowledge; Electrochemical electrodes
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189514
作者单位	Joint Center for Artificial Photosynthesis, Lbnl, Berkeley, CA 94720, United States; Department Chemical and Biomolecular Engineering, Uc Berkeley, Berkeley, CA 94720, United States
推荐引用方式 GB/T 7714	Weng L.-C.,Bell A.T.,Weber A.Z.. A systematic analysis of Cu-based membrane-electrode assemblies for CO2reduction through multiphysics simulation[J],2020,13(10).
APA	Weng L.-C.,Bell A.T.,&Weber A.Z..(2020).A systematic analysis of Cu-based membrane-electrode assemblies for CO2reduction through multiphysics simulation.Energy & Environmental Science,13(10).
MLA	Weng L.-C.,et al."A systematic analysis of Cu-based membrane-electrode assemblies for CO2reduction through multiphysics simulation".Energy & Environmental Science 13.10(2020).