The development of new batteries with a high energy density, fast kinetics, and high stability require targeted basic research. It must determine which reversible electrochemical processes take place at high cell voltages and flows. When a battery is discharged, chemical energy is transformed by electrochemical redox reactions (the transfer of electrons during the reactions) into electrical energy. One of the objects that scientists in the research field Electrochemistry study is the interface between the electrode (electron conductor) and the electrolyte (ion conductor), at which the battery-specific redox reaction takes place. At the focus of this work is the structure of the interface, even at the level of atoms, in order to understand the electrochemical processes and interactions that are taking place. The goal is to comprehend the processes in real energy storage units by using models and thus to derive approaches for improving the efficiency and stability of batteries. At the same time, alternatives to conventional lithium are tested in order to create the basis for next-generation and subsequent batteries.
Electrochemistry for Batteries
The research group Electrochemistry for Batteries is concerned with studying diverse types of innovative electrochemical storage systems, such as lithium-ion, lithium-air, and lithium-sulfur batteries. Other promising systems are also being studied. These are cell systems (in particular those based on sodium and magnesium), supercapacitors, and redox-flow batteries.
Basics of Electrochemistry
The research group Basics of Electrochemistry studies the fundamental aspects of electrochemical processes in electrochemical storage units. One of the tasks is to study the changes taking place between the surface of the electrodes and the electrolytes during the processes of charging and discharging.
Interactions Electrode & Electrolyte
The research group Interactions Electrode & Electrolyte aims towards a fundamental understanding of the processes at the interface at the molecular scale to optimize lithium-ion batteries