{"title":"通过掺入碱离子提高氯离子导电包晶固体电解质的结构和电化学稳定性","authors":"Tianchen Xia, Qiang Li, Zhiyang Xue, Yingchun Miao, Xiaodong Shen, Xiangyu Zhao","doi":"10.1002/adma.202411605","DOIUrl":null,"url":null,"abstract":"<p>The use of chloride-based solid electrolytes derived from Lewis acid‒base reactions enables the construction of various new rechargeable batteries, such as chloride ion batteries (CIBs). However, a critical problem with these electrolytes is their poor stability under low-temperature, moist, or electrochemical conditions, which can lead to deterioration of the phase structure and a loss of ion conduction. Herein, the robust cubic structure of tin-based perovskite chloride—a chloride ion conductor—is achieved by alkali ion doping at the tin site via direct mechanical milling. The as-prepared cubic CsSn<sub>0.925</sub>Na<sub>0.075</sub>Cl<sub>2.925</sub> (CSNC) electrolyte exhibits outstanding structural stability over a broad temperature range of 213−473 K or under a high relative humidity of up to 90%, at which the typical chloride electrolytes previously reported deteriorate because of moisture. Importantly, mild annealing can modify the microstructure of the CSNC, resulting in a two fold increase in ionic conductivity and an increase in electrochemical stability, which is superior to those of other chloride electrolytes reported in previous studies. The effective chloride-ion transfer and wide electrochemical window of the CSNC are further demonstrated in different solid-state CIBs.</p>","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"37 1","pages":""},"PeriodicalIF":27.4000,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Boosting the Structural and Electrochemical Stability of Chloride-Ion-Conducting Perovskite Solid Electrolytes by Alkali Ion Doping\",\"authors\":\"Tianchen Xia, Qiang Li, Zhiyang Xue, Yingchun Miao, Xiaodong Shen, Xiangyu Zhao\",\"doi\":\"10.1002/adma.202411605\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The use of chloride-based solid electrolytes derived from Lewis acid‒base reactions enables the construction of various new rechargeable batteries, such as chloride ion batteries (CIBs). However, a critical problem with these electrolytes is their poor stability under low-temperature, moist, or electrochemical conditions, which can lead to deterioration of the phase structure and a loss of ion conduction. Herein, the robust cubic structure of tin-based perovskite chloride—a chloride ion conductor—is achieved by alkali ion doping at the tin site via direct mechanical milling. The as-prepared cubic CsSn<sub>0.925</sub>Na<sub>0.075</sub>Cl<sub>2.925</sub> (CSNC) electrolyte exhibits outstanding structural stability over a broad temperature range of 213−473 K or under a high relative humidity of up to 90%, at which the typical chloride electrolytes previously reported deteriorate because of moisture. Importantly, mild annealing can modify the microstructure of the CSNC, resulting in a two fold increase in ionic conductivity and an increase in electrochemical stability, which is superior to those of other chloride electrolytes reported in previous studies. The effective chloride-ion transfer and wide electrochemical window of the CSNC are further demonstrated in different solid-state CIBs.</p>\",\"PeriodicalId\":114,\"journal\":{\"name\":\"Advanced Materials\",\"volume\":\"37 1\",\"pages\":\"\"},\"PeriodicalIF\":27.4000,\"publicationDate\":\"2024-11-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/adma.202411605\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Materials","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/adma.202411605","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Boosting the Structural and Electrochemical Stability of Chloride-Ion-Conducting Perovskite Solid Electrolytes by Alkali Ion Doping
The use of chloride-based solid electrolytes derived from Lewis acid‒base reactions enables the construction of various new rechargeable batteries, such as chloride ion batteries (CIBs). However, a critical problem with these electrolytes is their poor stability under low-temperature, moist, or electrochemical conditions, which can lead to deterioration of the phase structure and a loss of ion conduction. Herein, the robust cubic structure of tin-based perovskite chloride—a chloride ion conductor—is achieved by alkali ion doping at the tin site via direct mechanical milling. The as-prepared cubic CsSn0.925Na0.075Cl2.925 (CSNC) electrolyte exhibits outstanding structural stability over a broad temperature range of 213−473 K or under a high relative humidity of up to 90%, at which the typical chloride electrolytes previously reported deteriorate because of moisture. Importantly, mild annealing can modify the microstructure of the CSNC, resulting in a two fold increase in ionic conductivity and an increase in electrochemical stability, which is superior to those of other chloride electrolytes reported in previous studies. The effective chloride-ion transfer and wide electrochemical window of the CSNC are further demonstrated in different solid-state CIBs.
期刊介绍:
Advanced Materials, one of the world's most prestigious journals and the foundation of the Advanced portfolio, is the home of choice for best-in-class materials science for more than 30 years. Following this fast-growing and interdisciplinary field, we are considering and publishing the most important discoveries on any and all materials from materials scientists, chemists, physicists, engineers as well as health and life scientists and bringing you the latest results and trends in modern materials-related research every week.