At the moment, lithium-ion technology is dominating the market for mobile energy storage as the most powerful system. However, the reserves of the raw material are limited and their use is becoming increasingly expensive. This requires alternative storage technologies and material systems with well-available raw materials and highest energy densities.
The project aims to develop a post-lithium energy storage device based on high quality ions in cooperation with industrial and research partners.
The project will develop a concept for the implementation of aluminium-ion batteries. The project can also be seen as an important milestone in the research work of the Centre for Efficient High-Temperature Substance Conversion (ZeHS). Energy storage will also become necessary in combination with the use of renewable generated electricity for high-temperature processes.
For the selection of suitable materials, the Freiberg scientists use an algorithm for material evaluation for electrochemical energy storage systems developed in the BMBF's joint project "CryPhysConcept". In addition to the material properties, it also evaluates the economic and ecological aspects. Aluminium turned out to be a suitable material. It is easy to produce and recycle. In addition, it does not ignite like lithium in the air, which means that it can achieve greater safety. In addition, aluminium-ion batteries are cheaper than commercial lithium systems and can store more energy.