With the rapid development of portable electronics, new energy vehicles, and smart grids, ion batteries are becoming one of the most widely used energy storage devices, while the safety concern of ion batteries has always been an urgent problem to be solved. To develop a safety-guaranteed battery, the characterization of the internal structure is indispensable, where electron microscopy plays a crucial role. Based on this, this paper summarizes the application of transmission electron microscopy (TEM) in battery safety, further concludes and analyzes the aspects of dendrite growth and solid electrolyte interface (SEI) formation that affect the safety of ion batteries, and emphasizes the importance of electron microscopy in battery safety research and the potential of these techniques to promote the future development of this field. These advanced electron microscopy techniques and their prospects are also discussed.

中文翻译：

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锂离子电池透射电子显微镜表征的最新进展

随着便携式电子产品、新能源汽车、智能电网的快速发展，离子电池正成为应用最广泛的储能器件之一，而离子电池的安全问题一直是亟待解决的问题。为了开发有安全保障的电池，内部结构的表征是必不可少的，其中电子显微镜起着至关重要的作用。基于此，本文总结了透射电子显微镜（TEM）在电池安全方面的应用，进一步总结和分析了影响离子电池安全的枝晶生长和固体电解质界面（SEI）形成方面，并强调了研究的重要性。电子显微镜在电池安全研究中的潜力以及这些技术推动该领域未来发展的潜力。还讨论了这些先进的电子显微镜技术及其前景。