期刊
ACS APPLIED MATERIALS & INTERFACES
卷 14, 期 21, 页码 24245-24254出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.2c01099
关键词
production technology; production environment; all-solid-state battery; sulfidic solid electrolyte; process engineering; sulfidic solid separator; solid electrolyte sheet preparation
资金
- BMW Group
- Bavarian Ministry of Economic Affairs, Regional Development and Energy [16BZF205]
- German Federal Ministry for Economic Affairs and Energy [16BZF205]
Researchers have studied the formation of harmful gas H2S when solid sulfide electrolytes come in contact with water. By analyzing exemplary material states, they found that water content has the highest impact on H2S formation rate, while other parameters have negligible effects. The study highlights the need for a controlled atmosphere in production facilities to ensure worker safety and product quality.
Researchers have been working for many years to find new material and cell systems that can be used as potential post-lithium-ion batteries. Among these, the all-solid-state battery is considered a promising candidate, with sulfide-based materials having essential advantages over other solid electrolyte materials, particularly in terms of their high ionic conductivity. A great challenge, however, is their high reactivity in contact with water, where harmful hydrogen sulfide (H2S) is formed. Since H2S formation has implications for both worker safety and material quality, it is important to quantify its impact. For this reason, this paper examines the relationship between the product properties and the H2S formation as well as influences resulting from the production environment. Exemplary material states along the process chain of a wet coating process route are analyzed for the steps of storage, mixing, coating, drying, and densifying with Li6PS5Cl (LPSCl) as a solid electrolyte material. By determining the H2S formation rate for sulfide-based separator sheets, it is shown that the water content in the surrounding atmosphere has the highest impact, while other investigated parameters are negligibly small in comparison. Among the product properties, the geometric surface and pore surface have a great influence. These results demonstrate the need for a controlled atmosphere in the production facilities at dew points of -40 to -50 degrees C. At those moisture levels, occupational safety and product quality are ensured for the investigated solid electrolyte sheets of LPSCl. This study is the first to provide quantitative data from the point of view of the production environment on the formation of H2S gas when using solid sulfide electrolytes and can therefore serve as a guideline for equipment, material, and cell manufacturers.
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