首页|Stabilization of cathode electrolyte interphase for aqueous zinc-ion batteries
Stabilization of cathode electrolyte interphase for aqueous zinc-ion batteries
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Aqueous zinc-ion battery systems are attractive for next-generation energy storage devices,however,the unstable electrode electrolyte interphase,especially cathode electrolyte interphase(CEI),has induced rapid capacity attenuation,insufficient cycle life,and severe safety issues.Evolving the researching of CEI formation,composition,dynamic structure,and reaction mechanisms would help in understanding the fundamental electrochemistry at CEI such as electron and ion transport processes,further strengthen-ing the specific capacity,rate,and cycle performance of the cathode materials.In this review,we summa-rized the latest progress in understanding interfacial reaction mechanisms and ion dynamic behavior,emphasizing the impact of surface-specific adsorption and solvation behaviors on the interface's ultimate structure and chemical composition.Subsequently,the significant challenges that persist in CEI formation mechanisms,such as cathodic dissolution,by-product formation,electrostatic interactions,constrained electrochemical windows,oxygen evolution reaction,overpotentials,phase transitions,and additional fac-tors,were discussed.These challenges are explored to identify triggers contributing to the depletion of active materials and alterations in the composition or state of the CEI.Ultimately,with a deep comprehen-sion of interfacial behaviors,the review articulates innovative optimization strategies through a detailed categorization of approaches in electrolyte engineering,cathode engineering,and artificial CEI develop-ment.Furthermore,future challenges and development directions of CEI are presented.We hope to offer insights for constructing robust CEI films to achieve high performance aqueous zinc-ion batteries.
Key Laboratory for Soft Chemistry and Functional Materials Ministry of Education,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China
Fundamental Research Funds for the Central UniversitiesNatural Science Foundation of ChinaNatural Science Foundation of ChinaChina Postdoctoral Science FoundationPostgraduate Research & Practice Innovation Program of Jiangsu Province
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