{"title":"使用纤维素纳米晶-MXene 和聚四亚甲基乙二醇水性聚氨酯及 PEO 制成的模量与温度无关的单离子导电聚合物电解质","authors":"Mohammad Nourany, Sasan Rostami, Farough Talebi","doi":"10.1002/pc.28980","DOIUrl":null,"url":null,"abstract":"<jats:label/>With the rapid progress of electric vehicles, the focus on high‐energy‐density anodes has increased substantially. Lithium metal (Li) possesses a high energy density of 3800 mAh/g. However, it poses safety issues for liquid electrolytes, mandating the use of safer replacements like solid polymer electrolytes (SPEs). In this regard, polyethylene oxide (PEO), as the most prominent SPE, shows the highest ionic conductivity (<jats:italic>σ</jats:italic>) among polymers despite facing challenges including loss of thermomechanical stability around 60°C and low lithium‐ion (Li<jats:sup>+</jats:sup>) transference number (). Here, we designed SPEs consisting of PEO, poly (tetramethylene glycol)‐based waterborne polyurethane (WPU), cellulose nanocrystal (CNC), and MXene. The presence of WPU was quite effective at increasing (). High CNC loading () made elastic modulus () independent of temperature with terminal , while improving <jats:italic>σ</jats:italic> and . These achievements were attributed to CNCs competing with over oxygen atoms of PEO and the formation of a strong CNC network. was able to increase <jats:italic>σ</jats:italic> from attributed to intercalation of PEO into its interlayer spaces while also increasing to 0.897. The SPEs showed a high electrochemical stability window. The optimal electrolyte showed high Coulombic efficiency and stable cycling performance.Highlights<jats:list list-type=\"bullet\"> <jats:list-item>Ionomeric units resulted in a high lithium‐ion transference number ()</jats:list-item> <jats:list-item>Hydrogen bonding was partially responsible for increased</jats:list-item> <jats:list-item>Cellulose nanocrystals (CNCs) increased ionic conductivity and</jats:list-item> <jats:list-item>CNCs suppressed PEO spherulites' size and increased thermomechanical stability</jats:list-item> <jats:list-item>MXene disrupts PEO crystal growth and provides a new route for conduction</jats:list-item> </jats:list>","PeriodicalId":20375,"journal":{"name":"Polymer Composites","volume":"274 1","pages":""},"PeriodicalIF":4.8000,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Single‐ion conducting polymer electrolytes with temperature‐independent modulus using cellulose nanocrystal‐MXene and Poly(tetramethylene glycol)‐based waterborne polyurethane and PEO\",\"authors\":\"Mohammad Nourany, Sasan Rostami, Farough Talebi\",\"doi\":\"10.1002/pc.28980\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<jats:label/>With the rapid progress of electric vehicles, the focus on high‐energy‐density anodes has increased substantially. Lithium metal (Li) possesses a high energy density of 3800 mAh/g. However, it poses safety issues for liquid electrolytes, mandating the use of safer replacements like solid polymer electrolytes (SPEs). In this regard, polyethylene oxide (PEO), as the most prominent SPE, shows the highest ionic conductivity (<jats:italic>σ</jats:italic>) among polymers despite facing challenges including loss of thermomechanical stability around 60°C and low lithium‐ion (Li<jats:sup>+</jats:sup>) transference number (). Here, we designed SPEs consisting of PEO, poly (tetramethylene glycol)‐based waterborne polyurethane (WPU), cellulose nanocrystal (CNC), and MXene. The presence of WPU was quite effective at increasing (). High CNC loading () made elastic modulus () independent of temperature with terminal , while improving <jats:italic>σ</jats:italic> and . These achievements were attributed to CNCs competing with over oxygen atoms of PEO and the formation of a strong CNC network. was able to increase <jats:italic>σ</jats:italic> from attributed to intercalation of PEO into its interlayer spaces while also increasing to 0.897. The SPEs showed a high electrochemical stability window. The optimal electrolyte showed high Coulombic efficiency and stable cycling performance.Highlights<jats:list list-type=\\\"bullet\\\"> <jats:list-item>Ionomeric units resulted in a high lithium‐ion transference number ()</jats:list-item> <jats:list-item>Hydrogen bonding was partially responsible for increased</jats:list-item> <jats:list-item>Cellulose nanocrystals (CNCs) increased ionic conductivity and</jats:list-item> <jats:list-item>CNCs suppressed PEO spherulites' size and increased thermomechanical stability</jats:list-item> <jats:list-item>MXene disrupts PEO crystal growth and provides a new route for conduction</jats:list-item> </jats:list>\",\"PeriodicalId\":20375,\"journal\":{\"name\":\"Polymer Composites\",\"volume\":\"274 1\",\"pages\":\"\"},\"PeriodicalIF\":4.8000,\"publicationDate\":\"2024-09-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Polymer Composites\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1002/pc.28980\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, COMPOSITES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polymer Composites","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/pc.28980","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, COMPOSITES","Score":null,"Total":0}
Single‐ion conducting polymer electrolytes with temperature‐independent modulus using cellulose nanocrystal‐MXene and Poly(tetramethylene glycol)‐based waterborne polyurethane and PEO
With the rapid progress of electric vehicles, the focus on high‐energy‐density anodes has increased substantially. Lithium metal (Li) possesses a high energy density of 3800 mAh/g. However, it poses safety issues for liquid electrolytes, mandating the use of safer replacements like solid polymer electrolytes (SPEs). In this regard, polyethylene oxide (PEO), as the most prominent SPE, shows the highest ionic conductivity (σ) among polymers despite facing challenges including loss of thermomechanical stability around 60°C and low lithium‐ion (Li+) transference number (). Here, we designed SPEs consisting of PEO, poly (tetramethylene glycol)‐based waterborne polyurethane (WPU), cellulose nanocrystal (CNC), and MXene. The presence of WPU was quite effective at increasing (). High CNC loading () made elastic modulus () independent of temperature with terminal , while improving σ and . These achievements were attributed to CNCs competing with over oxygen atoms of PEO and the formation of a strong CNC network. was able to increase σ from attributed to intercalation of PEO into its interlayer spaces while also increasing to 0.897. The SPEs showed a high electrochemical stability window. The optimal electrolyte showed high Coulombic efficiency and stable cycling performance.HighlightsIonomeric units resulted in a high lithium‐ion transference number ()Hydrogen bonding was partially responsible for increasedCellulose nanocrystals (CNCs) increased ionic conductivity andCNCs suppressed PEO spherulites' size and increased thermomechanical stabilityMXene disrupts PEO crystal growth and provides a new route for conduction
期刊介绍:
Polymer Composites is the engineering and scientific journal serving the fields of reinforced plastics and polymer composites including research, production, processing, and applications. PC brings you the details of developments in this rapidly expanding area of technology long before they are commercial realities.