PME DISTINGUISHED COLLOQUIUM SERIES: Dr. Martin Winter

Beyond PEO with Hybrid Polymer Electrolyte Concepts: Strategies Towards Higher Energy Densities

The demands for larger energy densities favor the exploitation of Lithium metal batteries, where polymer electrolytes are considered as viable opportunity,[1] despite remaining challenges in view of fast charge capability and operational temperatures beyond room temperature. While commercially available batteries form Bolloré with PEO can be used at temperatures >60°C, other polymer electrolytes, [2-5] including tailor-made polycaprolactones [6] and polymers made from grafted macrocycles [7] provide reasonable electrochemical performance already at 40°C.
Better discharge capacities and cells with higher energy density were realized based on a hybrid cell concept employing composite cathodes and scaffold-supported thin film polymer electrolytes.[8].
Further adjustments of the hybrid cell concept include consideration of operational conditions such as cell stack pressure, impacting module design, improved reversibility of the Li inventory, and insights into interfacial processes, [9-12] in this way constituting key strategies to afford polymer-based batteries that accommodate lead KPIs of relevant application scenarios.

Host: Prof. Chibueze Amanchukwu

<a href="https://uchicago.zoom.us/j/97132202071?pwd=SHM5U1RiaWlpY25YOUZ0bjlyZGtk… Link</a>