期刊
ACS APPLIED ENERGY MATERIALS
卷 4, 期 3, 页码 2365-2376出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.0c02888
关键词
metal-sulfur; continuum modeling; polysulfide shuttle; degradation; lithium-sulfur
资金
- German Federal Ministry for Education and Research (BMBF) [03XP0032A]
Metal-sulfur (Me-S) batteries show promise but face challenges such as fast capacity loss, low power density, and fast self-discharge. This study uses a pseudo-two-dimensional continuum model to analyze degradation behavior during cycling of Li-S and Mg-S batteries, focusing on the redistribution of active sulfur and its impact on long-term stability.
Metal-sulfur (Me-S) batteries are one of the most promising battery technologies and might even outperform future Li-ion batteries. However, these systems generally show a relatively fast capacity loss, low power density, and fast self-discharge. Furthermore, the underlying mechanisms are insufficiently understood, making it difficult to systematically improve cell performance. In the present study, we use a pseudo-two-dimensional continuum model to analyze the degradation behavior during cycling of Li-S and Mg-S batteries. The simulations reproduce charge and discharge curves of both systems and allow detailed investigations on the influence of material properties on degradation mechanisms. Special attention is paid to the redistribution of active sulfur during cycling and its effect on long-term stability. Finally, we demonstrate the application of the model for qualitative predictions of battery performance and lifetime of cathode designs with improved sulfur loading.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据