量化硫化物固体电解质中的多相 SEI 生长

IF 38.6 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Joule Pub Date : 2024-10-16 DOI:10.1016/j.joule.2024.07.006

Christoph D. Alt , Nadia U.C.B. Müller , Luise M. Riegger , Burak Aktekin , Philip Minnmann , Klaus Peppler , Jürgen Janek

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引用次数: 0

摘要

由于硫化物固体电解质（SE）在与锂金属接触时会发生化学还原，因此阻碍了锂金属阳极在固态电池（SSB）中的应用。一些模型型硫化物固态电解质（SEIs）的生长模式、组成和微观结构正在慢慢揭开面纱。本研究的目的是通过 SE 与锂金属粉末的直接反应，更好地了解典型多相 SEIs 的传输特性。因此，本研究分析了合成的批量 SEI 型材料（Li6PS5Cl）的组成和传导特性（σion 和 σel）。使用瓦格纳型扩散模型进行的动力学预测与细胞级多相 SEI 的最新电化学研究结果非常吻合。因此，这些发现提高了建立更精确的传输参数模型的能力，有助于加深对 SSB 中 SEI 生长和动力学的理解。通过控制所产生的 SEI 的部分电导率来稳定 Li|SE 界面的必要性得到了强调。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Quantifying multiphase SEI growth in sulfide solid electrolytes

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Quantifying multiphase SEI growth in sulfide solid electrolytes

The incorporation of lithium metal anodes in solid-state batteries (SSBs) is impeded due to the chemical reduction of sulfide solid electrolytes (SEs) in contact with lithium metal. Growth mode, composition, and microstructure of a few model-type SE interphases (SEIs) are slowly unveiled. The objective of this study is to better understand the transport properties of typical multiphase SEIs by direct reaction of the SE with lithium metal powder. Hence, the composition and conduction properties (σ_ion and σ_el) of synthesized bulk-scale SEI-type material (of Li₆PS₅Cl) are analyzed. The kinetic predictions using a Wagner-type diffusion model align well with recent results of electrochemical studies on cell-level multiphase SEIs. Accordingly, these findings enhance the ability to model transport parameters with greater accuracy and contribute to a deeper understanding of SEI growth and kinetics in SSBs. The need to stabilize the Li|SE interface by controlling the partial conductivities of the resulting SEI is emphasized.

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来源期刊

Joule Energy-General Energy

CiteScore

53.10

自引率

2.00%

发文量

198

期刊介绍： Joule is a sister journal to Cell that focuses on research, analysis, and ideas related to sustainable energy. It aims to address the global challenge of the need for more sustainable energy solutions. Joule is a forward-looking journal that bridges disciplines and scales of energy research. It connects researchers and analysts working on scientific, technical, economic, policy, and social challenges related to sustainable energy. The journal covers a wide range of energy research, from fundamental laboratory studies on energy conversion and storage to global-level analysis. Joule aims to highlight and amplify the implications, challenges, and opportunities of novel energy research for different groups in the field.