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Hybrid electrolytes and their interfaces in lithium metal batteries

To address the challenges of poor contact and low ionic conductivity in solid electrolytes (SEs) and polymer electrolytes (PEs), a hybrid approach is under investigation, with the intention of combining the advantages of both electrolyte types. Incorporating SEs and PEs together in batteries introduces new interfaces, which can lead to additional potential drops. Therefore, a comprehensive understanding of these interfaces is crucial for selecting optimal electrolyte combinations to enhance battery performance. In the MiNaBatt project, we aim to perform detailed (electro-)chemical analysis of the SE/PE interface to identify the key factors influencing the interface resistance under various conditions, such as different currents and temperatures. To achieve this, multiple-electrode pouch cells are fabricated, and electrochemical testing is conducted using various SE and PE combinations.