His, Muhammad Bintang Seongsoo, Lee Sunghee, Shin Kim, B.G. Jung, Hun Gi Whang, D. Lim, Hee Dae 2024-01-19T13:32:32Z 2024-01-19T13:32:32Z 2021-09-02 2021-11 1385-8947 https://pubs.kist.re.kr/handle/201004/116246 Sn-based materials have been highlighted as promising anodes for next-generation batteries; however, such alloying-based anodes suffer from gradual cell degradation caused by the associated large volume changes, leading to particle pulverization and an unstable solid electrolyte interphase (SEI). A key to constructing a stable SEI as well as effectively buffering the large volume expansion is to establish appropriate electrolyte conditions. In this work, to induce the formation of a favorable SEI layer, a Sn anode is paired with an electrolyte composed of eutectic succinonitrile (SN) combined with fluoroethylene carbonate (FEC) for the first time. Whereas conventional electrolytes are prone to form organic SEI components, which are vulnerable to large volume changes, the combination of SN and FEC enables the formation of a mechanically rigid SEI that is mainly composed of favorable inorganics such as LiF and Li3N. The synergistic effects of SN and FEC result in superior cycle performance of the Sn anode with improved efficiency compared with that achieved using conventional carbonate electrolytes. The modified SEI layer was closely investigated using various surface analysis techniques, with the individual effects of SN and FEC extracted. The rational design of the electrolyte provides a simple yet effective approach to enhance the electrochemical performance of Sn anodes and can be further extended to other alloying-based anode materials. ？ 2021 The Author(s) English Elsevier BV Stabilization effect of solid-electrolyte interphase by electrolyte engineering for advanced Li-ion batteries Article 10.1016/j.cej.2021.130524 1 Chemical Engineering Journal, v.424 Chemical Engineering Journal 424 Y scie scopus 000707037200099 2-s2.0-85107114755 Engineering, Environmental Engineering, Chemical Engineering Article SUCCINONITRILE-BASED ELECTROLYTE FLUOROETHYLENE CARBONATE IN-SITU INTERFACIAL STABILITY ANODE MATERIALS SEI FORMATION LITHIUM SALT SILICON EVOLUTION SIZE Inorganic SEI layer Sn anode Solid electrolyte interphase Succinonitrile