{"title":"消HF凝胶-聚合物电解质实现5.0-5.4 V双离子电池电解液/界面/阴极三位一体稳定","authors":"Baozhi Zhang, Qunting Qu, Weixing Xiong, Jie Shao, Longfei Wang, Ru Wang, Honghe Zheng","doi":"10.1002/smtd.202500649","DOIUrl":null,"url":null,"abstract":"<p><p>Dual-ion batteries (DIBs) that are composed of graphite cathodes and low-potential anodes such as Li possess the unique advantages of high working voltage (≈5.0 V) and high power density, but suffer from the serious oxidative decomposition of electrolyte and cointercalation of solvent/anions into graphite cathode, leading to unsatisfactory cycling stability. From the perspectives of blocking the generation of corrosive HF in electrolyte and reinforcing the stability of cathode/electrolyte interphase (CEI), a gel-polymer electrolyte incorporating zeolite molecular sieve into the polymer matrix of polyvinylidene fluoride and polyacrylonitrile is prepared and utilized in DIBs. The physicochemical and electrochemical properties of this gel-polymer electrolyte are systematically studied and compared with those of liquid electrolytes. This gel-polymer electrolyte is demonstrated to be able to mitigate the oxidative decomposition of solvent at graphite cathode and inhibit the generation of HF that corrodes CEI. The stability of the CEI layer and graphite cathode during the long-term cycling is improved significantly. The assembled Li||graphite DIBs exhibit an outstanding capacity retention of 88.3% after 6000 cycles at 25 °C, and also allow stable cycling at 60 °C and a high cutoff voltage of 5.0-5.4 V.</p>","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2500649"},"PeriodicalIF":10.7000,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Trinitarian Stabilization of Electrolyte/Interphase/Cathode for 5.0-5.4 V Dual-Ion Batteries Realized by a Gel-Polymer Electrolyte Capable of HF Elimination.\",\"authors\":\"Baozhi Zhang, Qunting Qu, Weixing Xiong, Jie Shao, Longfei Wang, Ru Wang, Honghe Zheng\",\"doi\":\"10.1002/smtd.202500649\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Dual-ion batteries (DIBs) that are composed of graphite cathodes and low-potential anodes such as Li possess the unique advantages of high working voltage (≈5.0 V) and high power density, but suffer from the serious oxidative decomposition of electrolyte and cointercalation of solvent/anions into graphite cathode, leading to unsatisfactory cycling stability. From the perspectives of blocking the generation of corrosive HF in electrolyte and reinforcing the stability of cathode/electrolyte interphase (CEI), a gel-polymer electrolyte incorporating zeolite molecular sieve into the polymer matrix of polyvinylidene fluoride and polyacrylonitrile is prepared and utilized in DIBs. The physicochemical and electrochemical properties of this gel-polymer electrolyte are systematically studied and compared with those of liquid electrolytes. This gel-polymer electrolyte is demonstrated to be able to mitigate the oxidative decomposition of solvent at graphite cathode and inhibit the generation of HF that corrodes CEI. The stability of the CEI layer and graphite cathode during the long-term cycling is improved significantly. The assembled Li||graphite DIBs exhibit an outstanding capacity retention of 88.3% after 6000 cycles at 25 °C, and also allow stable cycling at 60 °C and a high cutoff voltage of 5.0-5.4 V.</p>\",\"PeriodicalId\":229,\"journal\":{\"name\":\"Small Methods\",\"volume\":\" \",\"pages\":\"e2500649\"},\"PeriodicalIF\":10.7000,\"publicationDate\":\"2025-06-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Small Methods\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1002/smtd.202500649\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Small Methods","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/smtd.202500649","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Trinitarian Stabilization of Electrolyte/Interphase/Cathode for 5.0-5.4 V Dual-Ion Batteries Realized by a Gel-Polymer Electrolyte Capable of HF Elimination.
Dual-ion batteries (DIBs) that are composed of graphite cathodes and low-potential anodes such as Li possess the unique advantages of high working voltage (≈5.0 V) and high power density, but suffer from the serious oxidative decomposition of electrolyte and cointercalation of solvent/anions into graphite cathode, leading to unsatisfactory cycling stability. From the perspectives of blocking the generation of corrosive HF in electrolyte and reinforcing the stability of cathode/electrolyte interphase (CEI), a gel-polymer electrolyte incorporating zeolite molecular sieve into the polymer matrix of polyvinylidene fluoride and polyacrylonitrile is prepared and utilized in DIBs. The physicochemical and electrochemical properties of this gel-polymer electrolyte are systematically studied and compared with those of liquid electrolytes. This gel-polymer electrolyte is demonstrated to be able to mitigate the oxidative decomposition of solvent at graphite cathode and inhibit the generation of HF that corrodes CEI. The stability of the CEI layer and graphite cathode during the long-term cycling is improved significantly. The assembled Li||graphite DIBs exhibit an outstanding capacity retention of 88.3% after 6000 cycles at 25 °C, and also allow stable cycling at 60 °C and a high cutoff voltage of 5.0-5.4 V.
Small MethodsMaterials Science-General Materials Science
CiteScore
17.40
自引率
1.60%
发文量
347
期刊介绍:
Small Methods is a multidisciplinary journal that publishes groundbreaking research on methods relevant to nano- and microscale research. It welcomes contributions from the fields of materials science, biomedical science, chemistry, and physics, showcasing the latest advancements in experimental techniques.
With a notable 2022 Impact Factor of 12.4 (Journal Citation Reports, Clarivate Analytics, 2023), Small Methods is recognized for its significant impact on the scientific community.
The online ISSN for Small Methods is 2366-9608.