The cathode-electrolyte interphase(CEI)plays a pivotal role in determining the energy density and cycling stability of lithium-ion batteries.However,its complex formation mechanisms,dynamic evolution,and interplay wit...The cathode-electrolyte interphase(CEI)plays a pivotal role in determining the energy density and cycling stability of lithium-ion batteries.However,its complex formation mechanisms,dynamic evolution,and interplay with battery components pose significant challenges for a fundamental understanding and targeted regulation.While prior research has focused on modifying bulk electrolyte solvation structures and applying inert cathode coatings,this perspective analyzes the mechanisms of CEI formation and stabilization,with particular emphasis on cathode pre-interphase engineering,near-surface electric double-layer modulation,and functional coating design.Future research prospects are outlined,highlighting the advanced in situ characterization techniques with high spatiotemporal resolution to probe transient interfacial processes,along with innovative strategies for constructing CEI architectures.展开更多
基金the Research Grants Council of Hong Kong through the projects ECS 21308523 and C100324Ythe National Natural Science Foundation of China through the project 52302312+4 种基金the Innovation and Technology Commission of Hong Kong through the project ITS/130/23FPthe Environmental Pro-tection Department of Hong Kong through the project GTF202220159the City University of Hong Kong through projects 9667262,9610537,and 7005921the Department of Science and Technology of Guangdong Province through project 2022A1515010212,2023B1515130004,and 2024A1515013020the Department of Science and Technology of Sichuan Province through project 2024NSFSC0275.
文摘The cathode-electrolyte interphase(CEI)plays a pivotal role in determining the energy density and cycling stability of lithium-ion batteries.However,its complex formation mechanisms,dynamic evolution,and interplay with battery components pose significant challenges for a fundamental understanding and targeted regulation.While prior research has focused on modifying bulk electrolyte solvation structures and applying inert cathode coatings,this perspective analyzes the mechanisms of CEI formation and stabilization,with particular emphasis on cathode pre-interphase engineering,near-surface electric double-layer modulation,and functional coating design.Future research prospects are outlined,highlighting the advanced in situ characterization techniques with high spatiotemporal resolution to probe transient interfacial processes,along with innovative strategies for constructing CEI architectures.
