Key Parameters in Determining the Reactivity of Lithium Metal Battery,ACS Energy Letters

当前位置： X-MOL 学术 › ACS Energy Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Key Parameters in Determining the Reactivity of Lithium Metal Battery
ACS Energy Letters ( IF 19.3 ) Pub Date : 2023-07-05 , DOI: 10.1021/acsenergylett.3c01001
Bingyu Lu ₁ , Diyi Cheng ₂ , Bhagath Sreenarayanan ₁ , Weikang Li ₁ , Bhargav Bhamwala ₁ , Wurigumula Bao ₃ , Ying Shirley Meng _{1,

3}

Affiliation

Lithium metal anodes are crucial for high-energy-density batteries, but concerns regarding their safety remain. Limited investigations have evaluated the reactivity of Li metal anodes in full cell configurations. In this study, differential scanning calorimetry (DSC) and in situ Fourier-transform infrared spectroscopy (FTIR) were employed to quantitatively examine the Li metal reactivity. Lithiated graphite (Li-Gr) and lithiated silicon (Li-Si) were also compared. The reactivity of plated Li was systematically investigated when combined with different electrolyte compositions, morphologies, atmospheres, and various cathode materials (NMC622, LFP, and LNMO). It was discovered that all cell components, such as electrolyte composition, Li morphology, control of inactive Li accumulation, and cathode stability, play essential roles in regulating the reactivity of the plated Li. By optimizing these factors, the Li metal full cell exhibited no significant thermal reaction up to 400 °C. This research identifies key parameters for controlling Li metal reactivity, potentially advancing lithium metal battery design and manufacturing.

中文翻译：

决定锂金属电池反应活性的关键参数

锂金属阳极对于高能量密度电池至关重要，但对其安全性的担忧仍然存在。有限的研究评估了全电池配置中锂金属阳极的反应性。在这项研究中，采用差示扫描量热法（DSC）和原位傅立叶变换红外光谱（FTIR）来定量检测锂金属的反应性。还比较了锂化石墨（Li-Gr）和锂化硅（Li-Si）。系统地研究了与不同电解质成分、形态、气氛和各种正极材料（NMC622、LFP 和 LNMO）结合时镀锂的反应性。研究发现，所有电池组件，例如电解质组成、锂形态、非活性锂积累的控制以及阴极稳定性，在调节镀锂的反应性中发挥重要作用。通过优化这些因素，锂金属全电池在高达 400 °C 的温度下没有表现出明显的热反应。这项研究确定了控制锂金属反应性的关键参数，有可能推进锂金属电池的设计和制造。

更新日期：2023-07-05

点击分享查看原文

点击收藏

公开下载

阅读更多本刊新发论文本刊介绍/投稿指南