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Solid State Chemistry

The HIU research group Solid State Chemistry is an interdisciplinary group in which chemists, physicists, and engineers are active. The focus of their research is on the battery systems to come after the lithium-ion ones, referred to simply as "batteries beyond lithium". Parallel to this work, new and alternative approaches are being developed to overcome the obstacles to lithium-free batteries.

Although lithium-ion batteries are widely used, their storage capacity is limited. In the future, battery systems with higher energy density will be needed, in particular for electromobility. These batteries will need the capacity to store more electrical energy at a lower weight. Lithium-free batteries will also be needed in the future that possess a markedly higher storage capacity and improved safety features. This work should lay the cornerstone for innovative and more powerful batteries.

 

One object of study is the potential of various battery materials to raise the energy density of today's battery systems.

Current examples of this are the fluoride-ion and chloride-ion batteries, both of which have the potential for significantly exceeding the storage capacity of the lithium-ion battery.

 

Another object of current research is the magnesium battery, which also exhibits a relatively high energy density.

 

This research group is also involved in the development of active materials (e.g., electrode materials). One feature that has priority here is the issue of safety.

 

New anode and cathode materials made of nanocomposites are also being developed and tested in order to make electrochemical energy storage units more efficient.