A reduction of the inactive components can increase the energy density and reduce production cost of Li‐ion batteries. But an effective reduction of the binder amount also negatively affects the adhesion of the electrode. Herein, slot‐die coating of a primer layer for Li‐ion anodes is investigated. It is shown that the use of a primer layer with only 0.3 g m⁻² can increase the adhesive force by the factor of 5 as well as the cell performance for anodes with low binder content. The process limits for a stable, defect‐free primer coating are investigated at coating speeds of up to 550 m min⁻¹. The limits coincide both for a setup without vacuum box and with vacuum box with theory‐based equations. By using a vacuum box, the minimum wet film thickness can be reduced by half.

中文翻译：

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锂离子电池电极的底漆层通过狭缝模头涂层的高速涂层

减少非活性成分可提高能量密度并降低锂离子电池的生产成本。但是，粘合剂量的有效减少也不利地影响电极的粘附性。在此，研究了用于锂离子阳极的底漆层的狭缝模头涂层。结果表明，使用仅具有0.3 g m ^-2的底漆层可以将粘合力提高5倍，并且可以降低粘合剂含量低的阳极的电池性能。在最高550 m min ^-1的涂层速度下研究了稳定，无缺陷的底漆涂层的工艺极限。对于没有真空箱的设置和带有基于理论方程式的真空箱的设置，这些限制都是一致的。通过使用真空箱，最小的湿膜厚度可以减少一半。