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Understanding Interfacial Chemistry Interactions in Energy-Dense Lithium-Ion Electrodes

Accounts of Materials Research 2023年第2期4卷 156-167页

作者： donghee gueon Miguel A.Gonzalez Kenneth J.Takeuchi Esther S.Takeuchi Amy C.Marschilok Elsa Reichmanis Department of Chemical and Bimolecular Engineering Lehigh UniversityBethlehemPennsylvania 18015United States School of Chemical and Biomolecular Engineering Georgia Institute of TechnologyAtlantaGeorgia 30332United States Interdisciplinary Science Department Brookhaven National LaboratoryUptonNew York 11973United States Institute for Energy Sustainability and Equity Stony Brook UniversityStony BrookNew York 11794United States Department of Material Science and Chemical Engineering Stony Brook UniversityStony BrookNew York 11794United States Department of Chemistry Stony Brook UniversityStony Brook 11794United States

For the past two decades,conversion and alloying-type materials have been heralded as the natural heir to commercially available graphite anodes due to their ability to deliver high gravimetric/volumetric power.Commercialization of batteries with these high-energy-density active materials could impact a variety of sectors including electric vehicles,grid storage,and consumer electronics and contribute toward an ever-increasing electrified world.However,the various failure mechanisms from inherent interfacial chemical instabilities associated with these materials make them unable to be merely substituted into currently available electrode fabrication and formulation processing techniques.As a result,realizing the high theoretical capacity and achieving commercial viability of these materials will rely on the careful manipulation of interfacial chemical interactions that dictate and control various kinetic and transport processes across multiple scales of the composite electrode.This has led to a plethora of research that has focused on systematically understanding properties of the different electrode components and designing carefully constructed electrode formulations to achieve composite electrodes with increased chemical stability,enhanced local mixed conductivities,or improved mechanical resilience.This Account relates recent progress in the understanding of synergetic opportunities for energy-dense,resilient composite anodes.By understanding the interplay between components of the composite electrode,we can construct enhanced well-integrated electrodes with performance metrics that surpass empirically derived architectures.Due to the increased complexity of high-volume-expanding electrodes,performance is more than the cumulative contributions of the individual components,and therefore energy and compatibility matching are important for robust electrochemical performance across cycling,rate capability,facile lithium-ion transport,and stability.In this Account,synergistic opportunities are framed from a chemis

关键词： composite interfacial electrode

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