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钠离子电池负极材料原位透射电镜研究

陆佳宁，张智*，高义华，邹 进*
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2024年 第43卷 第3期:  1000-6281（2024）03-371-019     下载地址：

钠离子电池负极材料原位透射电镜研究

陆佳宁，张智*，高义华，邹 进*

（1.华中科技大学物理学院& 武汉光电国家研究中心, 湖北武汉430074；2.Materials Engineering & Centre for Microscopy and Microanalysis, The University of Queensland, St. Lucia, QLD 4072, Australia）

摘 要  近年来，由于地球上钠资源分布广泛和丰富，钠离子电池的研究引起了人们的极大兴趣。目前，钠离子电池仍面临着能量密度低、循环稳定性不理想等关键科学问题。钠离子电池存储性能的提高需要对其电极材料储钠微观机制的全面和精确的理解。尽管研究者们已经开展了大量的原位透射电子显微学研究来揭示钠离子电池负极材料的储钠特性和微观机制，但是相关的综述鲜见报道。鉴于此，本文综述了近年来原位透射电子显微镜在研究钠离子电池负极材料储钠过程中材料的形貌、微观结构和化学成分等的演化与微观机理的研究进展，阐明了钠离子电池负极材料的组成/结构与钠离子电池电化学性能之间的构效关联。本综述旨在为高效钠离子电池负极材料的高效选择和合理设计提供参考。

关键词   钠离子电池；负极材料；原位研究；透射电镜；

中图分类号：O646；TM911；TG115.21  文献标识码：A           doi：10.3969/j.issn.1000-6281.2024.03.014

    

Study of anode materials for sodium-ion batteries byIn situ transmission electron microscopy

LU Jianing 1, ZHANG Zhi1*, GAO Yihua 1, ZOU Jin2*

(1. School of Physics & Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, China;2. Materials Engineering & Centre for Microscopy and Microanalysis, The University of Queensland, St. Lucia, QLD 4072, Australia)

Abstract   Sodium-ion batteries (SIBs) have attracted increasing attentions in recent years due to the abundance and even distribution of Na resources on the earth.Currently, SIBs still face key scientific issues such as low energy density and unsatisfactory cycling stability.The improvement of the storage performance of SIBs requires a comprehensive and precise understanding of the microscopic mechanisms of sodium storage in their electrode materials.Although extensive in-situ transmission electron microscopy(TEM) investigations have been performed to provide mechanistic insights into the electrochemical performance of anode materialsof SIBs, a dedicated review for the in-situ TEM investigations on SIBs is missing in the literature. In this review, recent progress in the in-situ TEM investigations on dynamic transformation and the corresponding morphological, structural and chemical evolutions during the sodium storage process in the SIBs anode materials was summarized, elucidating the conformational correlation between the composition/structure of anode materials and electrochemical performance of sodium-ion batteries. This review aims to provide a reference for the efficient selection and rational design of anode materials for high-efficiency SIBs.

Keywords   sodium-ion batteries；anode materials；in-situstudy；transmission electron microscopy

 

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