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Institute of Energy and Climate Research

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Research Area 5 - Hybrid electrolytes

Modern hybrid material concepts via entirely new combinations of materials and electrolyte components will yield tailor-made electrolyte features. In this research area, the focus therefore lies on the development and preparation of hybrid and composite materials. This includes the close coupling of chemical design with theoretical calculations and simulations. As a precondition, a fundamental understanding of structure and dynamics of bare polymeric solvents and of hybrid systems consisting of simple polymers, statistical and ordered copolymer structures, suitable dissolved salts, ionic liquids, and/or dispersed solid particles is necessary, which is reached by ion transport analysis from electrochemical techniques such as impedance spectroscopy, electrochemical polarization techniques, and further mechanical and physico-chemical investigations and with further techniques such as thermal analysis, spectroscopic and microscopic techniques such as NMR, SEM and AFM to investigate dynamics, local ion-solvent and ion-lattice interactions.

Also theoretical analysis is done by MDE and MC simulation to elucidate the coupling of chain dynamics and ionic transport. Moreover, a deep understanding of the correlation between electrochemical and other properties and changes of chemical design, micro- and nano-structure and ordering is pursued to enhance the understanding of main operation and failure mechanisms in a battery cell.

Hybrid electrolytes

Task leader and coordinator: Prof. Dr. Martin Winter Prof. Dr. Hans-Dieter Wiemhöfer