Development of an all-solid-state lithium battery by slurry-coating procedures using a sulfidic electrolyte

By Tugce Ates, M. Keller, Jörn Kulisch, Torben Adermann, Stefano Passerini. Energy Storage Materials, 2019

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Abstract All-solid-state batteries (ASSBs) are promising candidates to significantly exceed the energy densities of today's lithium-ion batteries. However, for their successful commercialization, an easily scalable production procedure is needed. The tape casting procedure herein described allows to process a composite cathode by using an inert (polyoleophine) binder, conductive carbon, β-Li3PS4 and Li1+x[Ni0.6Mn0.2Co0.2]1-xO2. The inorganic electrolyte β-Li3PS4 layer is either coated onto the composite cathode or applied as a self-standing tape. In both cases a pressing step at room temperature is used to remove the porosity. Finally, a polymer electrolyte layer is added prior to the lithium metal anode to avoid the reaction between the latter and the inorganic solid electrolyte. Such dual-electrolyte, solid-state cells demonstrate good cycle performance and specific capacity. The type of conductive carbon in the composite cathode is seen to play a crucial role.

Subfields: Automotive Engineering, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/cbed2477a71baf0bf8ca0d28393f3f5febd89b8d