Fraunhofer Battery AllianceRechargeable solid-state batteries are seen as the next generation of high-energy storage systems. Compared to conventional lithium-ion batteries with liquid or gel-like organic electrolytes, they offer numerous advantages. These include higher energy density, improved stability and, above all, increased operational safety. Where cooling systems and additional safety technology, such as fire protection, can be avoided, it is possible to develop notably simplified system solutions.
A key challenge in the development of solid-state batteries is to increase their energy content. On the one hand, materials and processes must be found that enable stable interfaces with low transition resistances. On the other hand, the implementation of innovative electrode architectures and cell designs is essential. The production of batteries consisting only of solid materials poses a challenge both at cell level and for the entire battery system. This requires the use of new manufacturing and production techniques as well as innovative methods for cell assembly.
To this end, the Fraunhofer institutes offer in-depth knowledge and many years of experience in the areas of material development, component production, cell assembly and system design. In addition to material selection, a particular focus is on the development of suitable process technologies for the industrial production of solid-state battery cells. System integration is also a central research focus.