Reconfiguring Polymer Chain for Regulating Na+ Solvation Structure in a Gel Polymer Electrolyte toward Sodium Metal Batteries

IF 19.3 1区材料科学 Q1 CHEMISTRY, PHYSICAL

ACS Energy Letters Pub Date : 2025-03-28 DOI:10.1021/acsenergylett.5c00331

Yan Yuan, Huan Liu, Lei Zhang, Zhao Fang, Jiaxin Luo, Yaxin Kong, Long Kong, Hai Lu

{"title":"Reconfiguring Polymer Chain for Regulating Na+ Solvation Structure in a Gel Polymer Electrolyte toward Sodium Metal Batteries","authors":"Yan Yuan, Huan Liu, Lei Zhang, Zhao Fang, Jiaxin Luo, Yaxin Kong, Long Kong, Hai Lu","doi":"10.1021/acsenergylett.5c00331","DOIUrl":null,"url":null,"abstract":"Gel polymer electrolytes (GPEs) instead of liquid electrolytes can greatly improve the lifespan and safety of sodium metal batteries (SMBs). However, inferior interface stability against Na metal and sluggish reaction kinetics restrict their practical use. Herein, a cross-linked GPE (c-GPE) is proposed by in situ copolymerization of ethoxylated trimethylolpropane triacrylate (ETT) and trifluoroethyl methacrylate (TM) in a liquid electrolyte. The uniquely fabricated c-GPE exhibits impressive ionic conductivity, a wide electrochemical window, low flammability, and favorable Na metal compatibility. Particularly, the functional copolymer chain regulates the Na+ solvation structure with lower desolvation energy by a strong cation-dipole (in polymer) interaction. Consequently, full cells based on the Na3V2(PO4)3 (NVP) cathode (NVP|c-GPE|Na) display an ultralong cycle life (>3000 cycles), remarkable rate capability (up to 15C), and wide temperature adaptability. The work offers new insight into constructing a Na+ coordination environment, achieving more facile desolvation by the polymer chain design of the GPE used for developing advanced SMBs.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"66 1","pages":""},"PeriodicalIF":19.3000,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Energy Letters ","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1021/acsenergylett.5c00331","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}

引用次数: 0

Abstract

Gel polymer electrolytes (GPEs) instead of liquid electrolytes can greatly improve the lifespan and safety of sodium metal batteries (SMBs). However, inferior interface stability against Na metal and sluggish reaction kinetics restrict their practical use. Herein, a cross-linked GPE (c-GPE) is proposed by in situ copolymerization of ethoxylated trimethylolpropane triacrylate (ETT) and trifluoroethyl methacrylate (TM) in a liquid electrolyte. The uniquely fabricated c-GPE exhibits impressive ionic conductivity, a wide electrochemical window, low flammability, and favorable Na metal compatibility. Particularly, the functional copolymer chain regulates the Na⁺ solvation structure with lower desolvation energy by a strong cation-dipole (in polymer) interaction. Consequently, full cells based on the Na₃V₂(PO₄)₃ (NVP) cathode (NVP|c-GPE|Na) display an ultralong cycle life (>3000 cycles), remarkable rate capability (up to 15C), and wide temperature adaptability. The work offers new insight into constructing a Na⁺ coordination environment, achieving more facile desolvation by the polymer chain design of the GPE used for developing advanced SMBs.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment

CiteScore

31.20

自引率

5.00%

发文量

469

审稿时长

1 months

期刊介绍： ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format. ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology. The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.