SoLiS battery research project to develop solid-state battery concept

The research project “SoLiS – Development of Lithium-Sulphur Solid State Batteries in Multilayer Pouch Cells”, which started in July 2021 and is funded by the German government with almost 1.8 million euros, aims to transfer a promising battery concept from basic research to industrial application.

This basic research is based, among other things, on the joint project “Liscell”, in which the Fraunhofer Institute for Material and Beam Technology IWS from Dresden was already involved. “The research results so far are encouraging: the basic feasibility of a Li-S solid state battery has already been demonstrated on a laboratory scale,” writes the Fraunhofer IWS. “However, too little data on application-relevant prototype cells exists so far, so it is not yet possible to evaluate the technology.”

This is now to be done within the framework of SoLiS: The goal is to develop battery cells with multiple electrode layers based on Li-S solid-state technology and to evaluate them in an application-oriented manner. The researchers see applications for LiS cells in electric aviation, among others.

According to the partners, in addition to the processes for processing and manufacturing, they also want to “holistically” investigate and optimise the nano- and microstructure of the electrodes. The challenge is to bring the sulphur into close contact with electrically conductive carbon and the ion-conducting electrolytes.

Under the leadership of the Fraunhofer IWS, the Federal Ministry of Education and Research (BMBF) is funding five partners from science and industry with a total of almost 1.8 million euros. In addition to the project coordination, the Fraunhofer IWS contributes know-how on innovative processes for the production of electrodes and prototype cells to the project.

The Technical University of Dresden is working on the cathode composite materials and a suitable electrode design. Scientists at the Westfälische Wilhelms-Universität Münster are researching customised solid electrolytes and their transport properties for the new battery type. Justus Liebig University Giessen is contributing its experience and expertise in characterising interfacial phenomena in solid-state batteries. Schunk Kohlenstofftechnik GmbH is taking on the production of carbon additives or industrially relevant composite materials.


about „SoLiS battery research project to develop solid-state battery concept“

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