Edge Formation in High‐Speed Intermittent Slot‐Die Coating of Disruptively Stacked Thick Battery Electrodes

作者：Ralf Diehm, Hannes Weinmann, Jana Kumberg, Marcel Schmitt, Jürgen Fleischer, Philip Scharfer, Wilhelm Schabel · 发表于：Energy Technology · 年份：2019 · DOI：10.1002/ente.201900137 · 被引用次数：26 · 研究领域：Advanced Battery Technologies Research、Advancements in Battery Materials、Advanced Battery Materials and Technologies

In industrial lithium‐ion battery manufacturing, patterned structured electrodes are required due to subsequent processes. In particular, novel and advanced cell stack formation processes cause challenging design requirements for electrode geometry. This work examines the influence of coating speeds up to 50 m min –1 and wet‐film thicknesses up to 400 µm on the coating edge quality. To determine the coating edge quality, the start‐up length in every pattern in the coating direction is compared for different coating parameters. Parameters such as speed and film thickness show no limiting effect, which makes high process speeds possible.