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核桃状TiO2中空颗粒应用于锂硫电池的研究

作者:时间:2025-05-02点击数:



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文章编号: 1672-6987202502-0062-07 DOI 10.16351/j.1672-6987.2025.02.009

宁大泽, 孙洪广*青岛科技大学 高分子科学与工程学院, 山东 青岛 266042

摘要: 锂硫电池LiSB凭借其超高的理论容量和高的经济效益成为未来最有竞争力的电池系统之一但硫S正极的巨大体积膨胀和多硫化物LiPSs的穿梭效应使得锂硫电池的应用受到阻碍使用一种纤维状的SiO2作为模板利用硬模板法简便地合成了核桃状TiO2中空颗粒WHTiO2随后WHTiO2与硫复合制备锂硫电池正极以通过物理限制及化学吸附来削弱穿梭效应在之后的电化学性能测试中C正极相比WHTiO2正极表现出了超高的比容量0.1 C时为1 210 mAh · g-1同时有着优异的容量保持率电池性能明显提升


关键词: 锂硫电池 二氧化钛 纳米颗粒 穿梭效应


中图分类号: TB 321TM 911.3        文献标志码: A


引用格式: 宁大泽 孙洪广.核桃状TiO2中空颗粒应用于锂硫电池的研究J. 青岛科技大学学报自然科学版 2025 462 62-68.


NING Daze SUN Hongguang. Walnut-like TiO2 hollow particles for lithium-sulfur batteriesJ. Journal of Qingdao University of Science and TechnologyNatural Science Edition 2025 462 62-68.

Walnut-like TiO2 Hollow Particles for Lithium-Sulfur Batteries

NING DazeSUN HongguangCollege of Polymer Science and EngineeringQingdao University of Science and TechnologyQingdao 266042China

Abstract Lithium sulfur batteriesLiSB have become one of the most competitive batteries system in the future. Howeverthe huge volume expansion of sulfur S cathodes and the shuttle effect of polysulfides LiPSs hinder the application of lithium-sulfur batteries. Hereina fibrous SiO2 was used as a template to easily synthesize walnut-like TiO2 hollow particles WHTiO2 by a hard template method. SubsequentlyWHTiO2 was compounded with sulfur to prepare a cathode to weaken the shuttle effect through physical confinement and chemical adsorption. In the subsequent electrochemical performance testsIn the subsequent electrochemical performance testscompared with the C cathodesthe WHTiO2 cathodes exhibited an ultra-high specific capacity 1 210 mAh · g-1 at 0.1 C and the capacity retention rate is significantly improvedthe battery performance is significantly improved.

Key wrds lithium-sulfur batterytitanium dioxidenano particlesshuttle effect

收稿日期: 2024-07-01

基金项目: 山东省自然科学基金博士基金项目ZR2018BEM037.

作者简介: 宁大泽1996—,男,硕士研究生.     * 通信联系人.


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