Polymer‐based separator for all‐solid‐state batteries produced by additive manufacturing

Abstract

AbstractThe high demand for an efficient energy supply for various applications facilitates the development of innovative storage technologies like all‐solid‐state batteries in addition to novel production technologies. Compared to the conventional manufacturing process, additive manufacturing (AM) is a promising technology used for the rapid and cost‐effective production of battery components containing separators. However, AM technologies like laser‐based powder bed fusion of polymers (PBF‐LB/P) have been neglected so far. The present research aims to fill this research gap and outline a novel approach for processing polymers like polyethylene oxide (PEO) and polyvinylidene fluoride (PVDF) into separators using PBF‐LB/P. Optimal process parameters for manufacturing PVDF and PEO with PBF‐LB/P to generate homogeneous and dense layers represent the key findings of this paper and provide a deeper process understanding. The first proof of concept for producing separator layers by PBF‐LB/P in a scalable process is demonstrated as a result.