{"title":"Vertical & lateral ion-flux modulated ion-conductive SEI for high-performance Li-metal batteries","authors":"Yiping Liu , Yuxin Huang , Qiang Zhang , Rouyan Guo , Guangqi Zhang , Jie Dong , Liancheng Zhao , Liming Gao","doi":"10.1016/j.ensm.2025.104020","DOIUrl":null,"url":null,"abstract":"<div><div>Ideal solid electrolyte interphase (SEI) is required for non-dendrite lithium (Li) deposition of lithium metal batteries (LMBs). However, the spontaneously-formed SEI is non-homogenous in the composition and structure and thus cause oriented distribution of Li<sup>+</sup> flux, which leads to the detrimental formation of lithium dendrites and poor cyclability of batteries. Here we propose a vertical & lateral ion-flux modulated ion-conductive SEI for high-voltage Li-metal batteries. A fluorinated MCM-41 (FMCM-41) modified LiPF<sub>6</sub> electrolyte is designed to construct the SEI film, which consists of homogenously distributed LiF and Li<sub>x</sub>SiO<sub>y</sub>, to regulate Li<sup>+</sup> transport paths in the lateral and the vertical direction, respectively, achieving uniform lithium plating. With the FMCM-41 modified electrolyte, the prepared Li||Li cell presents a long-term stability over 1000 h, and the Li||NCM622 full cell exhibits outstanding cycling performance with a high specific capacity of 169.9 mAh g<sup>-1</sup> and a high-capacity retention of 93.3 % over 100 cycles at 0.5 C. This lateral-vertical concept provides a promising strategy for designing a desired SEI with uniform Li<sup>+</sup> transport paths to achieve ultra-long and high-rates lithium metal batteries.</div></div>","PeriodicalId":306,"journal":{"name":"Energy Storage Materials","volume":"75 ","pages":"Article 104020"},"PeriodicalIF":18.9000,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy Storage Materials","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2405829725000212","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
Ideal solid electrolyte interphase (SEI) is required for non-dendrite lithium (Li) deposition of lithium metal batteries (LMBs). However, the spontaneously-formed SEI is non-homogenous in the composition and structure and thus cause oriented distribution of Li+ flux, which leads to the detrimental formation of lithium dendrites and poor cyclability of batteries. Here we propose a vertical & lateral ion-flux modulated ion-conductive SEI for high-voltage Li-metal batteries. A fluorinated MCM-41 (FMCM-41) modified LiPF6 electrolyte is designed to construct the SEI film, which consists of homogenously distributed LiF and LixSiOy, to regulate Li+ transport paths in the lateral and the vertical direction, respectively, achieving uniform lithium plating. With the FMCM-41 modified electrolyte, the prepared Li||Li cell presents a long-term stability over 1000 h, and the Li||NCM622 full cell exhibits outstanding cycling performance with a high specific capacity of 169.9 mAh g-1 and a high-capacity retention of 93.3 % over 100 cycles at 0.5 C. This lateral-vertical concept provides a promising strategy for designing a desired SEI with uniform Li+ transport paths to achieve ultra-long and high-rates lithium 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.