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引用次数: 0
摘要
本研究为通过控制堆栈压力来增强全固态锂离子电池中锂离子金属阳极与固态电解质(SSE)之间界面的稳定性提供了指导。研究首先在仔细分析过去 60 年来从文献中收集的锂实验数据的基础上,制定了纯锂中各种蠕变变形机制的构成方程。这一分析有助于构建纯 Li 的综合变形机理图 (DMM)。接下来,演示了 DMM 如何帮助确定理想的堆叠压力,以减少锂金属和 SSE 之间界面的空洞/枝晶形成。研究发现,最佳堆叠压力会因金属锂厚度、金属锂长宽比、电流密度、金属锂晶粒大小和温度等因素而变化。实验数据与预测结果进行了比较和讨论。
Deformation Mechanism Maps of Pure Lithium: Their Application in Determining Stack Pressure for All-Solid-State Lithium-Ion Batteries
This study provides a guide for enhancing the stability of the interface between the Li metal anode and solid-state electrolytes (SSEs) in all-solid-state Li-ion batteries by controlling stack pressure. It begins by formulating constitutive equations for various creep deformation mechanisms in pure Li, based on a careful analysis of the experimental data for Li gathered from the literature over the past 60 years. This analysis facilitates the construction of comprehensive deformation mechanism maps (DMMs) for pure Li. Next, it is demonstrated how DMMs can aid in determining the ideal stack pressure to mitigate void/dendrite formation at the interface between the Li metal and SSEs. This optimal stack pressure is found to vary depending on factors such as the Li metal thickness, the aspect ratio of the Li metal, current density, grain size of the Li metal, and temperature. Experimental data are compared with the predictions, and the results are discussed.
ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment
CiteScore
31.20
自引率
5.00%
发文量
469
审稿时长
1 months
期刊介绍:
ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format.
ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology.
The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.