Xuan Wang, Lisi Xu, Maosheng Li, Yuanyuan Hu, Ning Wang, Yuezhong Meng, Kai Yang, Kuirong Deng
{"title":"锂-NO3 调节型刚柔协同聚合物电解质促进高性能锂金属电池的发展","authors":"Xuan Wang, Lisi Xu, Maosheng Li, Yuanyuan Hu, Ning Wang, Yuezhong Meng, Kai Yang, Kuirong Deng","doi":"10.1016/j.ensm.2024.103778","DOIUrl":null,"url":null,"abstract":"<p>Conventional polymer electrolytes suffer from low ionic conductivity, poor interface compatibility, low mechanical strength and flammability. Herein, a rigid-flexible synergistic ultrastrong nonflammable polymer electrolytes (LiNO<sub>3</sub>-PPT@PI) regulated by LiNO<sub>3</sub> is developed, which consists of rigid polyimide (PI) fiber skeleton and flexible poly pentaerythritol tetraacrylate (PPT) plasticized with LiNO<sub>3</sub>/triethyl phosphate (TEP)/fluoroethylene carbonate (FEC). PI fiber skeleton enhances tensile strength of LiNO<sub>3</sub>-PPT@PI to 21.8 MPa. TEP effectively enhances ionic conductivity to 7.57 × 10<sup>−4</sup> S cm<sup>−1</sup> at 30 °C and improves flame retardancy. LiNO<sub>3</sub> is creatively utilized as the only lithium salt for LiNO<sub>3</sub>-PPT@PI to construct Li<sub>3</sub>N-rich solid electrolyte interphases (SEIs) and promote FEC to form LiF-rich SEIs/cathode-electrolyte interphases (CEIs) to improve interface stability, thereby enabling high-efficiency, long-term and dendrite-free cycling of LiFePO<sub>4</sub> (LFP)||Li cells and LiNi<sub>0.8</sub>Mn<sub>0.1</sub>Co<sub>0.1</sub>O<sub>2</sub> (NCM811)||Li cells, which is superior to the LiPF<sub>6</sub>-based polymer electrolytes. LFP||Li cells with LiNO<sub>3</sub>-PPT@PI exhibit excellent cycle performance over 650 cycles with 81.8% capacity retention. This work presents a promising design strategy of safe and efficient polymer electrolytes for Li metal batteries.</p>","PeriodicalId":306,"journal":{"name":"Energy Storage Materials","volume":null,"pages":null},"PeriodicalIF":18.9000,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"LiNO3 regulated rigid-flexible-synergistic polymer electrolyte boosting high-performance Li metal batteries\",\"authors\":\"Xuan Wang, Lisi Xu, Maosheng Li, Yuanyuan Hu, Ning Wang, Yuezhong Meng, Kai Yang, Kuirong Deng\",\"doi\":\"10.1016/j.ensm.2024.103778\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Conventional polymer electrolytes suffer from low ionic conductivity, poor interface compatibility, low mechanical strength and flammability. Herein, a rigid-flexible synergistic ultrastrong nonflammable polymer electrolytes (LiNO<sub>3</sub>-PPT@PI) regulated by LiNO<sub>3</sub> is developed, which consists of rigid polyimide (PI) fiber skeleton and flexible poly pentaerythritol tetraacrylate (PPT) plasticized with LiNO<sub>3</sub>/triethyl phosphate (TEP)/fluoroethylene carbonate (FEC). PI fiber skeleton enhances tensile strength of LiNO<sub>3</sub>-PPT@PI to 21.8 MPa. TEP effectively enhances ionic conductivity to 7.57 × 10<sup>−4</sup> S cm<sup>−1</sup> at 30 °C and improves flame retardancy. LiNO<sub>3</sub> is creatively utilized as the only lithium salt for LiNO<sub>3</sub>-PPT@PI to construct Li<sub>3</sub>N-rich solid electrolyte interphases (SEIs) and promote FEC to form LiF-rich SEIs/cathode-electrolyte interphases (CEIs) to improve interface stability, thereby enabling high-efficiency, long-term and dendrite-free cycling of LiFePO<sub>4</sub> (LFP)||Li cells and LiNi<sub>0.8</sub>Mn<sub>0.1</sub>Co<sub>0.1</sub>O<sub>2</sub> (NCM811)||Li cells, which is superior to the LiPF<sub>6</sub>-based polymer electrolytes. LFP||Li cells with LiNO<sub>3</sub>-PPT@PI exhibit excellent cycle performance over 650 cycles with 81.8% capacity retention. This work presents a promising design strategy of safe and efficient polymer electrolytes for Li metal batteries.</p>\",\"PeriodicalId\":306,\"journal\":{\"name\":\"Energy Storage Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":18.9000,\"publicationDate\":\"2024-09-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Energy Storage Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1016/j.ensm.2024.103778\",\"RegionNum\":1,\"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":"Energy Storage Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.ensm.2024.103778","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
LiNO3 regulated rigid-flexible-synergistic polymer electrolyte boosting high-performance Li metal batteries
Conventional polymer electrolytes suffer from low ionic conductivity, poor interface compatibility, low mechanical strength and flammability. Herein, a rigid-flexible synergistic ultrastrong nonflammable polymer electrolytes (LiNO3-PPT@PI) regulated by LiNO3 is developed, which consists of rigid polyimide (PI) fiber skeleton and flexible poly pentaerythritol tetraacrylate (PPT) plasticized with LiNO3/triethyl phosphate (TEP)/fluoroethylene carbonate (FEC). PI fiber skeleton enhances tensile strength of LiNO3-PPT@PI to 21.8 MPa. TEP effectively enhances ionic conductivity to 7.57 × 10−4 S cm−1 at 30 °C and improves flame retardancy. LiNO3 is creatively utilized as the only lithium salt for LiNO3-PPT@PI to construct Li3N-rich solid electrolyte interphases (SEIs) and promote FEC to form LiF-rich SEIs/cathode-electrolyte interphases (CEIs) to improve interface stability, thereby enabling high-efficiency, long-term and dendrite-free cycling of LiFePO4 (LFP)||Li cells and LiNi0.8Mn0.1Co0.1O2 (NCM811)||Li cells, which is superior to the LiPF6-based polymer electrolytes. LFP||Li cells with LiNO3-PPT@PI exhibit excellent cycle performance over 650 cycles with 81.8% capacity retention. This work presents a promising design strategy of safe and efficient polymer electrolytes for Li metal batteries.
期刊介绍:
Energy Storage Materials is a global interdisciplinary journal dedicated to sharing scientific and technological advancements in materials and devices for advanced energy storage and related energy conversion, such as in metal-O2 batteries. The journal features comprehensive research articles, including full papers and short communications, as well as authoritative feature articles and reviews by leading experts in the field.
Energy Storage Materials covers a wide range of topics, including the synthesis, fabrication, structure, properties, performance, and technological applications of energy storage materials. Additionally, the journal explores strategies, policies, and developments in the field of energy storage materials and devices for sustainable energy.
Published papers are selected based on their scientific and technological significance, their ability to provide valuable new knowledge, and their relevance to the international research community.