Hao Xu, Shuai Liu, Zhiang Li, Fan Ding, Ting Wang, Ting Liu, Weimin Wang, Kaikai Song, Jie Liu, Lina Hu
{"title":"Ti3C2Tx MXene enhanced PEO/SN-based solid electrolyte for high-performance Li metal battery","authors":"Hao Xu, Shuai Liu, Zhiang Li, Fan Ding, Ting Wang, Ting Liu, Weimin Wang, Kaikai Song, Jie Liu, Lina Hu","doi":"10.1016/j.jmst.2024.09.001","DOIUrl":null,"url":null,"abstract":"<p>Succinonitrile has shown significant promise for application in polymer electrolytes for solid-state lithium metal batteries due to its high ionic conductivity at low-temperature. However, the use of Succinonitrile is limited due to its corrosion of Li metal. Herein, we report a solid polymer electrolyte with high ionic conductivity (2.17 × 10<sup>−3</sup> S cm<sup>−1</sup>, 35 °C) enhanced by Ti<sub>3</sub>C<sub>2</sub>T<em><sub>x</sub></em>. Corrosion of the Li anode is prevented due to the Succinonitrile molecules being efficiently anchored by Ti<sub>3</sub>C<sub>2</sub>T<em><sub>x</sub></em>. Meanwhile, the coordination environment of Li<sup>+</sup> is weakened due to the introduction of competitive coordination induction effects into the polymer electrolyte, resulting in efficient Li<sup>+</sup> conduction. Furthermore, the mechanical properties of the electrolyte are enhanced by modulating the ratio of Ti<sub>3</sub>C<sub>2</sub>T<em><sub>x</sub></em> to suppress the growth of Li dendrites. Therefore, Li||Li symmetric batteries deliver stable cycling up to 8000 h at 28 °C. LiFePO<sub>4</sub>||Li full batteries exhibit excellent cycling stability of 151.7 mAh g<sup>−1</sup> with a capacity retention of 99.3% after 300 cycles. This work not only presents a new idea to suppress the corrosion of the Li anode by Succinonitrile but also provides a simple, feasible, and scalable strategy for high-performance Li metal batteries.</p>","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":null,"pages":null},"PeriodicalIF":11.2000,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Science & Technology","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.jmst.2024.09.001","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Succinonitrile has shown significant promise for application in polymer electrolytes for solid-state lithium metal batteries due to its high ionic conductivity at low-temperature. However, the use of Succinonitrile is limited due to its corrosion of Li metal. Herein, we report a solid polymer electrolyte with high ionic conductivity (2.17 × 10−3 S cm−1, 35 °C) enhanced by Ti3C2Tx. Corrosion of the Li anode is prevented due to the Succinonitrile molecules being efficiently anchored by Ti3C2Tx. Meanwhile, the coordination environment of Li+ is weakened due to the introduction of competitive coordination induction effects into the polymer electrolyte, resulting in efficient Li+ conduction. Furthermore, the mechanical properties of the electrolyte are enhanced by modulating the ratio of Ti3C2Tx to suppress the growth of Li dendrites. Therefore, Li||Li symmetric batteries deliver stable cycling up to 8000 h at 28 °C. LiFePO4||Li full batteries exhibit excellent cycling stability of 151.7 mAh g−1 with a capacity retention of 99.3% after 300 cycles. This work not only presents a new idea to suppress the corrosion of the Li anode by Succinonitrile but also provides a simple, feasible, and scalable strategy for high-performance Li metal batteries.
期刊介绍:
Journal of Materials Science & Technology strives to promote global collaboration in the field of materials science and technology. It primarily publishes original research papers, invited review articles, letters, research notes, and summaries of scientific achievements. The journal covers a wide range of materials science and technology topics, including metallic materials, inorganic nonmetallic materials, and composite materials.