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      Fundamentals and perspectives in developing zinc-ion battery electrolytes: a comprehensive review

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          The fundamentals and perspectives in developing zinc-ion electrolyte have been comprehensively revealed, include the basic characteristics, electrolyte/electrode interfaces, practical consideration and future perspectives.


          The development of low-cost and high-safety zinc-ion batteries (ZIBs) has been extensively discussed and reviewed in recent years, but the work on the comprehensive discussion and perspectives in developing zinc-ion electrolytes is still relatively lacking. Faced with critical challenges and bottlenecks practically, the viability of ZIBs critically depends on the development of suitable electrolytes and their practical considerations. In this review, a systematic summary with regard to the basic characteristics of zinc-ion electrolytes facing different issues from optimization strategies to the fundamental science of electrolyte/electrode interfaces (EEIs), particularly in the feasible modifications and advanced characterizations of EEIs, has been put forward. Due to the lack of consideration of the practical issues in major academic studies, we have particularly highlighted aspects that mainly focus on the choice of the electrolyte system, dosage of liquid and fluid electrolytes, status of gel and all-solid electrolytes, together with other concerns related to the electrolytes. The final section proposes significant perspectives to guide and promote the development of zinc-ion electrolytes.

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              Toward Safe Lithium Metal Anode in Rechargeable Batteries: A Review.

              The lithium metal battery is strongly considered to be one of the most promising candidates for high-energy-density energy storage devices in our modern and technology-based society. However, uncontrollable lithium dendrite growth induces poor cycling efficiency and severe safety concerns, dragging lithium metal batteries out of practical applications. This review presents a comprehensive overview of the lithium metal anode and its dendritic lithium growth. First, the working principles and technical challenges of a lithium metal anode are underscored. Specific attention is paid to the mechanistic understandings and quantitative models for solid electrolyte interphase (SEI) formation, lithium dendrite nucleation, and growth. On the basis of previous theoretical understanding and analysis, recently proposed strategies to suppress dendrite growth of lithium metal anode and some other metal anodes are reviewed. A section dedicated to the potential of full-cell lithium metal batteries for practical applications is included. A general conclusion and a perspective on the current limitations and recommended future research directions of lithium metal batteries are presented. The review concludes with an attempt at summarizing the theoretical and experimental achievements in lithium metal anodes and endeavors to realize the practical applications of lithium metal batteries.

                Author and article information

                Energy & Environmental Science
                Energy Environ. Sci.
                Royal Society of Chemistry (RSC)
                December 16 2020
                : 13
                : 12
                : 4625-4665
                [1 ]School of Materials Science and Engineering
                [2 ]Central South University
                [3 ]Changsha 410083
                [4 ]P. R. China
                [5 ]Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province
                © 2020


                Self URI (article page): http://xlink.rsc.org/?DOI=D0EE02620D


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