Edge Formation in High‐Speed Intermittent Slot‐Die Coating of Disruptively Stacked Thick Battery Electrodes. Issue 2 (30th May 2019)

• Record Type: Journal Article
• Authors: Diehm, Ralf; Weinmann, Hannes; Kumberg, Jana; Schmitt, Marcel; Fleischer, Jürgen; Scharfer, Philip; Schabel, Wilhelm
• Other Names: Kwade Arno guestEditor.
• Is Part Of: Energy technology. Volume 8:Issue 2(2020:Feb.)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-05-30
• Subjects: cell stack formation -- graphite anodes -- intermittent coating -- slot-die coating; Energy development -- Periodicals; Power resources -- Periodicals; 333.79
• DOI: 10.1002/ente.201900137
• Languages: English
• ISSNs: 2194-4288

Abstract

Abstract : 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. Abstract : There is scope for process improvements in lithium‐ion‐battery production due to intermittent coatings. New, improved cell stacking methods require a high coating quality. Herein, the influence of coating speed up to 50 m min −1 and wet‐film thickness up to 400 μm on the length of the intermittent coating edges is shown.