化工进展 ›› 2023, Vol. 42 ›› Issue (11): 5786-5800.DOI: 10.16085/j.issn.1000-6613.2022-2355

• 材料科学与技术 • 上一篇    

剪切增稠流体在锂离子电池电解质方面的研究进展

田晓录1(), 易义坤1, 海峰1, 吴振迪1, 郑申拓1, 郭靖宇1, 李明涛1,2()   

  1. 1.西安交通大学化学工程与技术学院,陕西 西安 710049
    2.西安交通大学苏州研究院,江苏 苏州 215021
  • 收稿日期:2022-12-26 修回日期:2023-03-17 出版日期:2023-11-20 发布日期:2023-12-15
  • 通讯作者: 李明涛
  • 作者简介:田晓录(1993—),男,博士研究生,研究方向为锂离子电池电解质。E-mail:txl1993@stu.xjtu.edu.cn
  • 基金资助:
    国家自然科学基金(21978231);陕西省国际科技合作计划重点项目(2022KWZ-08);江苏省自然科学基金(SBK2020021757)

Research progress in shear-thickening electrolytes for lithium-ion batteries

TIAN Xiaolu1(), YI Yikun1, HAI Feng1, WU Zhendi1, ZHENG Shentuo1, GUO Jingyu1, LI Mingtao1,2()   

  1. 1.College of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
    2.Suzhou Research Institute, Xi’an Jiaotong University, Suzhou 215021, Jiangsu, China
  • Received:2022-12-26 Revised:2023-03-17 Online:2023-11-20 Published:2023-12-15
  • Contact: LI Mingtao

摘要:

近年来因撞击、穿刺等外力导致的安全事故已经成为目前限制锂离子电池发展的主要瓶颈。针对这一问题,可以向传统电解液中引入特定的纳米添加剂,赋予电解液剪切增稠的特性,从而提高电池的抗冲击能力。本文主要讨论了剪切增稠流体的定义、性质、原理和影响因素,并回顾了近年来剪切增稠流体应用在锂离子电池中的最新研究进展。旨在总结剪切增稠电解液的合成方法与其性能的相互关系,提出纳米颗粒填充物的表面修饰、更大的长宽比尺寸和适当的浓度提升有利于增强电解液的增稠性能。最后,提出寻找和设计新的功能型纳米填充颗粒,实现电解液增稠性能和电化学性能的共同提升,将是剪切增稠电解液未来的发展方向。

关键词: 非牛顿流体, 流变学, 电解质, 纳米材料, 锂离子电池

Abstract:

Safety accidents of lithium-ion batteries (LIBs) caused by impact, puncture and other external forces have become one of the main bottlenecks restricting their development and application. Shear-thickening electrolytes are designed by introducing specific nano-additives into traditional electrolyte to improve the impact resistance of LIBs. This review mainly discusses the definition, properties, principles, and influencing factors of shear-thickening fluids and their recent applications in LIBs. This review aims to summarize the relationship between the synthesis methods of shear-thickening electrolytes and their properties. It also suggests that the surface modification of nanoparticle fillers, the increase of length-width ratio and concentration can enhance the thickening properties of the electrolytes. Finally, it is suggested that the future development of shear thickening electrolytes is to design new functional nano-fillers to achieve the simultaneous improvement of thickening properties and electrochemical performance.

Key words: non-Newtonian fluid, rheology, electrolyte, nanomaterial, lithium-ion battery

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