PULSELiON publishes its 22nd Open Access Paper: “Probing the chemical stability between current collectors and argyrodite Li₆PS₅Cl sulfide electrolyte”
The PULSELiON project proudly presents its 22nd Open Access publication, marking another major contribution to the understanding of solid-state battery interfaces and the path toward stable and scalable all-solid-state battery manufacturing.
The paper, titled “Probing the chemical stability between current collectors and argyrodite Li₆PS₅Cl sulfide electrolyte”, has been published in Communications Chemistry (Nature Portfolio, 2025, Volume 8, Article 212) and is available Open Access.
Understanding stability at the heart of sulfide-based solid-state batteries
Sulfide-based electrolytes such as Li₆PS₅Cl (argyrodite) are key candidates for next-generation solid-state batteries thanks to their high ionic conductivity. However, their chemical reactivity toward current collectors can seriously impact long-term stability and performance.
This study provides a systematic investigation of several current collector materials — Cu, Ni, stainless steel (SS), Al, and Al/C — and their interaction with the Li₆PS₅Cl electrolyte. Using combined XRD, XPS, XRF, and electrochemical impedance spectroscopy, the team analyzed degradation mechanisms, interfacial reactions, and corrosion behavior.
The findings reveal that stainless steel, nickel, aluminum, and aluminum–carbon show excellent chemical and electrochemical compatibility, while copper and lithium are prone to corrosion and side-reaction formation (e.g., Cu₂S, Cu₃P, Li₂O). These insights are vital for designing long-lasting and safe solid-state batteries and for scaling up wet-chemistry fabrication routes for sulfide components.
Contribution from PULSELiON
The research was conducted by AIT Austrian Institute of Technology GmbH, Center for Transport Technologies – Battery Technologies, in collaboration with the Università degli Studi di Modena e Reggio Emilia, within the framework of the PULSELiON project (EU Horizon Europe, Grant No. 101069686).