{"title":"1,1-二乙基乙烷作为锂硫电池的界面稳定溶剂","authors":"Juhwi Park, Tae-Hyun Kim, Taeeun Yim","doi":"10.1002/bkcs.12796","DOIUrl":null,"url":null,"abstract":"<p>Lithium–sulfur batteries (LSBs) have gained remarkable attention over the past several years, however, their inherent limitations, such as the poor interfacial stability of their Li anodes and the severe dissolution of polysulfide, are regarded as bottlenecks that prevent these batteries from entering commercial markets. In this study, a 1,1-diethoxyethane (DEE), which has been functionalized with acetal groups, is proposed as an electrolyte cosolvent to complement the limitations of the electrode materials of LSBs. In Li/Li symmetric cells, the DEE cosolvent exhibited stable cycling behavior, whereas the cell with the baseline electrolyte exhibited rapidly increasing polarization, even after 650 h. In LSB cells, the electrolyte that contains 50% DEE exhibits the highest cycling retention (65.0%) compared to the baseline electrolyte (49.8%) because it effectively protects the interface of the Li anode, but also suppresses the dissolution of polysulfide species.</p>","PeriodicalId":54252,"journal":{"name":"Bulletin of the Korean Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.7000,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"1,1-Diethoxyethane as an interfacial-stabilizing solvent for lithium–sulfur batteries\",\"authors\":\"Juhwi Park, Tae-Hyun Kim, Taeeun Yim\",\"doi\":\"10.1002/bkcs.12796\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Lithium–sulfur batteries (LSBs) have gained remarkable attention over the past several years, however, their inherent limitations, such as the poor interfacial stability of their Li anodes and the severe dissolution of polysulfide, are regarded as bottlenecks that prevent these batteries from entering commercial markets. In this study, a 1,1-diethoxyethane (DEE), which has been functionalized with acetal groups, is proposed as an electrolyte cosolvent to complement the limitations of the electrode materials of LSBs. In Li/Li symmetric cells, the DEE cosolvent exhibited stable cycling behavior, whereas the cell with the baseline electrolyte exhibited rapidly increasing polarization, even after 650 h. In LSB cells, the electrolyte that contains 50% DEE exhibits the highest cycling retention (65.0%) compared to the baseline electrolyte (49.8%) because it effectively protects the interface of the Li anode, but also suppresses the dissolution of polysulfide species.</p>\",\"PeriodicalId\":54252,\"journal\":{\"name\":\"Bulletin of the Korean Chemical Society\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2023-11-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Bulletin of the Korean Chemical Society\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/bkcs.12796\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of the Korean Chemical Society","FirstCategoryId":"92","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/bkcs.12796","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
1,1-Diethoxyethane as an interfacial-stabilizing solvent for lithium–sulfur batteries
Lithium–sulfur batteries (LSBs) have gained remarkable attention over the past several years, however, their inherent limitations, such as the poor interfacial stability of their Li anodes and the severe dissolution of polysulfide, are regarded as bottlenecks that prevent these batteries from entering commercial markets. In this study, a 1,1-diethoxyethane (DEE), which has been functionalized with acetal groups, is proposed as an electrolyte cosolvent to complement the limitations of the electrode materials of LSBs. In Li/Li symmetric cells, the DEE cosolvent exhibited stable cycling behavior, whereas the cell with the baseline electrolyte exhibited rapidly increasing polarization, even after 650 h. In LSB cells, the electrolyte that contains 50% DEE exhibits the highest cycling retention (65.0%) compared to the baseline electrolyte (49.8%) because it effectively protects the interface of the Li anode, but also suppresses the dissolution of polysulfide species.
期刊介绍:
The Bulletin of the Korean Chemical Society is an official research journal of the Korean Chemical Society. It was founded in 1980 and reaches out to the chemical community worldwide. It is strictly peer-reviewed and welcomes Accounts, Communications, Articles, and Notes written in English. The scope of the journal covers all major areas of chemistry: analytical chemistry, electrochemistry, industrial chemistry, inorganic chemistry, life-science chemistry, macromolecular chemistry, organic synthesis, non-synthetic organic chemistry, physical chemistry, and materials chemistry.