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DC Field | Value | Language |
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dc.citation.startPage | 103448 | - |
dc.citation.title | ENERGY STORAGE MATERIALS | - |
dc.citation.volume | 70 | - |
dc.contributor.author | Lee, Hyun-Wook | - |
dc.contributor.author | Lee, Ji-Hee | - |
dc.contributor.author | Kang, Hyokyeong | - |
dc.contributor.author | Kim, Ja-Yeong | - |
dc.contributor.author | Woo, Ji-Su | - |
dc.contributor.author | Kansara, Shivam | - |
dc.contributor.author | Hwang, Jang-Yeon | - |
dc.contributor.author | Kwak, Won-Jin | - |
dc.date.accessioned | 2024-07-10T16:35:13Z | - |
dc.date.available | 2024-07-10T16:35:13Z | - |
dc.date.created | 2024-07-04 | - |
dc.date.issued | 2024-06 | - |
dc.description.abstract | Localized high-concentration electrolytes (LHCEs) have unique solvation structures that do not affect the original salt-solvent coordination from highly concentrated electrolytes. LHCEs enable a wide electrochemical voltage window and mitigate the extensive dendritic growth of metallic anodes. However, in K metal batteries, LHCE undergoes undesirable side reactions because of potasside (K), triggering aggressive chemistry with a diluent, represented as hydrofluoroethers (HFEs), eventually resulting in poor cycle life. In this study, 1, 3, 5-trifluorobenzene (TFB) was introduced as a functional additive to prevent the parasitic K reaction. The three symmetrically substituted fluorines prevented TFB from disrupting the as-formed solvation structure of LHCE located in the outer sphere. This characteristic increases the reaction energy barrier between K and HFE, suppressing the deterioration of the metal anode by adding only 3 wt.% of TFB in LHCE. Moreover, TFB preferentially decomposes at each electrode because of its molecular energy level and increases the reversibility of the cell, reducing unnecessary consumption of electrolytes with a stable interface. This study discusses a novel method to prevent the K reaction at the electrolyte level and the utilization of LHCE in K batteries to pursue higher energy densities, sustaining the advantage of using a metal anode. | - |
dc.identifier.bibliographicCitation | ENERGY STORAGE MATERIALS, v.70, pp.103448 | - |
dc.identifier.doi | 10.1016/j.ensm.2024.103448 | - |
dc.identifier.issn | 2405-8297 | - |
dc.identifier.scopusid | 2-s2.0-85192857127 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/83071 | - |
dc.identifier.wosid | 001240737900001 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER | - |
dc.title | Suppression of potasside reaction in localized high concentration electrolytes utilizing fluorine-substituted benzene as bifunctional additive for potassium-metal batteries | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Science & Technology - Other Topics; Materials Science | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Potasside | - |
dc.subject.keywordAuthor | Potassium metal batteries | - |
dc.subject.keywordAuthor | Electrolytes | - |
dc.subject.keywordAuthor | Localized high concentration electrolytes | - |
dc.subject.keywordPlus | TOTAL-ENERGY CALCULATIONS | - |
dc.subject.keywordPlus | HIGH-VOLTAGE | - |
dc.subject.keywordPlus | ULTRASOFT PSEUDOPOTENTIALS | - |
dc.subject.keywordPlus | 1,3,5-TRIFLUOROBENZENE | - |
dc.subject.keywordPlus | POINTS | - |
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