储能科学与技术 ›› 2020, Vol. 9 ›› Issue (S1): 78-94.doi: 10.19799/j.cnki.2095-4239.2020.0317

• 储能测试与评价 • 上一篇    

固态核磁共振在电池材料离子扩散机理研究中的应用进展

张恒瑞1(), 沈越1(), 于尧1, 黄云辉1, 陈立桅2   

  1. 1.华中科技大学,湖北 武汉 430074
    2.中国科学院苏州纳米技术与纳米仿生研究所,江苏 苏州 215123
  • 收稿日期:2020-09-14 修回日期:2020-10-30 出版日期:2020-12-05 发布日期:2020-12-02
  • 通讯作者: 沈越 E-mail:zhang_hengrui@sjtu.edu.cn;shenyue1213@hust.edu.cn
  • 作者简介:张恒瑞(1999—),男,硕士研究生,主要研究方向为电化学储能材料与器件,E-mail:zhang_hengrui@sjtu.edu.cn
  • 基金资助:
    国家自然科学基金项目(51672098)

Advances in the application of solid-state nuclear magnetic resonance for the study of ion diffusion mechanism in battery materials

Hengrui ZHANG1(), Yue SHEN1(), Yao YU1, Yunhui HUANG1, Liwei CHEN2   

  1. 1.Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
    2.Suzhou Institute of Nano-Tech and Nano-Bionics, CAS, Suzhou 215123, Jiangsu, China
  • Received:2020-09-14 Revised:2020-10-30 Online:2020-12-05 Published:2020-12-02
  • Contact: Yue SHEN E-mail:zhang_hengrui@sjtu.edu.cn;shenyue1213@hust.edu.cn

摘要:

本文首先对固态核磁共振的基本原理进行了介绍,重点介绍了魔角旋转和交叉极化这两种可以减弱甚至消除核自旋体系中的部分相互作用以提高核磁共振谱图分辨率的方法。在此基础上,进一步总结了几种获取离子动力学信息的固态核磁共振技术,包括脉冲梯度场核磁共振、中心跃迁线宽分析、弛豫时间分析、二维交换核磁共振和自旋阵列回波核磁共振等。进一步地,本文针对不同研究对象,对这几种技术的适用范围进行了相应的介绍,并列举了一系列典型案例,比如固态核磁在锂离子电池负极材料、正极材料、LISICON型、Thio-LISICON型、NASICON型,石榴石型以及固态复合电解质材料中的离子扩散动力学分析,并比较了不同技术之间的优缺点。论文的最后部分对固态核磁共振技术在电池材料离子扩散机理研究中的应用进行了总结,并对其未来的发展作出了展望。

关键词: 固态核磁共振, 锂离子电池, 离子动力学, 离子扩散路径

Abstract:

In this review, we introduce the basic principles of solid-state nuclear magnetic resonance (NMR) spectroscopy, focusing on magic angle spinning and cross-polarization, which can reduce or eliminate partial interactions in the nuclear spin system to improve the resolution of NMR spectra. Several solid-state NMR techniques for obtaining ion migration dynamics information are summarized, including pulsed-field gradient NMR, central transition line width analysis, relaxation time analysis, 2D exchange NMR, and spin alignment echo NMR. Further, we review the application of these techniques to a series of typical cases, such as cathode materials, anode materials, LISICON, Thio-LISICON, NASICON, and garnet type solid electrolyte materials. A comparison of the advantages and disadvantages of each technology is also included. Finally, the recent developments in the field of solid-state NMR spectroscopy for the study of the mechanism of ion diffusion in batteries is discussed.

Key words: solid-state NMR, lithium-ion batteries, ionic dynamic, ion diffusion pathway

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