{"title":"用于金属锂电池的多功能 \"溶剂内稀释剂 \"高压电解液","authors":"Jian Lv, Zhuyu Wang, Yiwen Wang, Tong Wu, Danni Shen, Qinggong Jia","doi":"10.1002/adsu.202400247","DOIUrl":null,"url":null,"abstract":"<p>Sulfone liquids can be used as solvents for high-voltage electrolytes and have been extensively studied for their strong oxidation resistance. However, the problem of high viscosity and susceptibility to side reactions with metallic lithium has been the subject of criticism. To solve the issue of incompatibility with lithium, researchers adopted a high-concentration electrolyte, namely solvent-in-salt, which allows the anions in the lithium salt to preferentially contact the surface of the lithium metal and react to form an SEI film to block the reaction between sulfone solvents and lithium. However, the issue of high viscosity is particularly severe. This work proposes a new solvent model called “solvent-in-diluent” electrolyte to address both of these issues simultaneously, different from previous models of salt-in-solvent, the model not only effectively prevents sulfone contact with lithium metal surfaces, but also maintains a capacity retention rate of 82% after 500 cycles in the voltage range of 2.8–4.6 V, additionally, the temperature range in which the battery can operate using this electrolyte model has been extended (−20–60°C). This work proposes a new solvent model and challenges the minimum concentration of high-voltage electrolytes (0.04 <span>m</span>), providing a new approach and possibility for studying high-voltage electrolytes.</p>","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"8 11","pages":""},"PeriodicalIF":6.5000,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Multifunctional “Solvent-in-Diluent” High Voltage Electrolyte for Lithium Metal Batteries\",\"authors\":\"Jian Lv, Zhuyu Wang, Yiwen Wang, Tong Wu, Danni Shen, Qinggong Jia\",\"doi\":\"10.1002/adsu.202400247\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Sulfone liquids can be used as solvents for high-voltage electrolytes and have been extensively studied for their strong oxidation resistance. However, the problem of high viscosity and susceptibility to side reactions with metallic lithium has been the subject of criticism. To solve the issue of incompatibility with lithium, researchers adopted a high-concentration electrolyte, namely solvent-in-salt, which allows the anions in the lithium salt to preferentially contact the surface of the lithium metal and react to form an SEI film to block the reaction between sulfone solvents and lithium. However, the issue of high viscosity is particularly severe. This work proposes a new solvent model called “solvent-in-diluent” electrolyte to address both of these issues simultaneously, different from previous models of salt-in-solvent, the model not only effectively prevents sulfone contact with lithium metal surfaces, but also maintains a capacity retention rate of 82% after 500 cycles in the voltage range of 2.8–4.6 V, additionally, the temperature range in which the battery can operate using this electrolyte model has been extended (−20–60°C). This work proposes a new solvent model and challenges the minimum concentration of high-voltage electrolytes (0.04 <span>m</span>), providing a new approach and possibility for studying high-voltage electrolytes.</p>\",\"PeriodicalId\":7294,\"journal\":{\"name\":\"Advanced Sustainable Systems\",\"volume\":\"8 11\",\"pages\":\"\"},\"PeriodicalIF\":6.5000,\"publicationDate\":\"2024-06-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Sustainable Systems\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/adsu.202400247\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Sustainable Systems","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/adsu.202400247","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY","Score":null,"Total":0}
引用次数: 0
摘要
砜类液体可用作高压电解质的溶剂,并因其较强的抗氧化性而被广泛研究。然而,高粘度和易与金属锂发生副反应的问题一直为人诟病。为了解决与锂不相容的问题,研究人员采用了一种高浓度电解质,即 "盐中溶剂",这种电解质可使锂盐中的阴离子优先接触金属锂表面,并发生反应形成 SEI 膜,从而阻止砜类溶剂与锂发生反应。然而,高粘度问题尤为严重。这项工作提出了一种新的溶剂模型,称为 "溶剂-稀释剂 "电解液,以同时解决这两个问题。与以往的 "盐-溶剂 "模型不同,该模型不仅能有效防止砜与锂金属表面接触,还能在 2.8-4.6 V 电压范围内循环 500 次后保持 82% 的容量保持率,此外,使用这种电解液模型的电池可工作温度范围也得到了扩展(-20-60°C)。这项工作提出了一种新的溶剂模型,并挑战了高压电解质的最低浓度(0.04 m),为研究高压电解质提供了一种新的方法和可能性。
Multifunctional “Solvent-in-Diluent” High Voltage Electrolyte for Lithium Metal Batteries
Sulfone liquids can be used as solvents for high-voltage electrolytes and have been extensively studied for their strong oxidation resistance. However, the problem of high viscosity and susceptibility to side reactions with metallic lithium has been the subject of criticism. To solve the issue of incompatibility with lithium, researchers adopted a high-concentration electrolyte, namely solvent-in-salt, which allows the anions in the lithium salt to preferentially contact the surface of the lithium metal and react to form an SEI film to block the reaction between sulfone solvents and lithium. However, the issue of high viscosity is particularly severe. This work proposes a new solvent model called “solvent-in-diluent” electrolyte to address both of these issues simultaneously, different from previous models of salt-in-solvent, the model not only effectively prevents sulfone contact with lithium metal surfaces, but also maintains a capacity retention rate of 82% after 500 cycles in the voltage range of 2.8–4.6 V, additionally, the temperature range in which the battery can operate using this electrolyte model has been extended (−20–60°C). This work proposes a new solvent model and challenges the minimum concentration of high-voltage electrolytes (0.04 m), providing a new approach and possibility for studying high-voltage electrolytes.
期刊介绍:
Advanced Sustainable Systems, a part of the esteemed Advanced portfolio, serves as an interdisciplinary sustainability science journal. It focuses on impactful research in the advancement of sustainable, efficient, and less wasteful systems and technologies. Aligned with the UN's Sustainable Development Goals, the journal bridges knowledge gaps between fundamental research, implementation, and policy-making. Covering diverse topics such as climate change, food sustainability, environmental science, renewable energy, water, urban development, and socio-economic challenges, it contributes to the understanding and promotion of sustainable systems.