All-solid-state lithium-ion batteries are promising candidates to overcome safety and energy limitations of common lithium-ion batteries. Although excellent results have been reported for sulfide based electrolytes on a small scale, classical slurry-based lithium-ion processing fails to reproduce the same performance in a larger cell. In this study, a dry-film (DF) process is presented that replaces slurry based binders by a fibrous PTFE binder and reduces the binder amount to an absolute minimum as low as 0.1 wt%, which is the lowest reported value so far. Free-standing NCM sheets with a high areal loading of 6.5 mAh cm⁻² were prepared showing even at room temperature the same rate performance like binder-free electrodes with 2.5 mAh cm⁻². The impact of binder content on cell performance has been studied revealing significantly reduced impedance at contents below 0.7 wt%. To realize a practical cell, the cell composition was optimized and a 9 cm² sized rocking-chair type all-solid-state battery was prepared without any solvents underlining the sustainability of the DF process. The battery was cycled for 100 cycles without any artificial pressure, demonstrating the versatility and potential of the DF process.

全固态锂离子电池有望克服普通锂离子电池的安全性和能量限制。尽管已报道了小规模硫化物基电解质的优异结果，但传统的基于浆料的锂离子处理方法无法在较大的电池中再现相同的性能。在这项研究中，提出了一种干膜（DF）工艺，该工艺可以用纤维状PTFE粘合剂代替基于浆料的粘合剂，并将粘合剂的用量降至绝对最低值，低至0.1 wt％，这是迄今为止报道的最低值。制备了具有6.5 mAh cm ^-2的高面积载荷的自立式NCM片材，即使在室温下也显示出与2.5 mAh cm ^-2的无粘合剂电极相同的速率性能。已经研究了粘合剂含量对电池性能的影响，揭示了在含量低于0.7 wt％时阻抗显着降低。为了实现实用的电池，对电池组成进行了优化，并制备了9 cm ²大小的摇椅型全固态电池，其中没有任何溶剂，这说明了DF工艺的可持续性。该电池在没有任何人工压力的情况下循环了100次循环，证明了DF工艺的多功能性和潜力。