Fraunhofer Institute for Integrated Systems and Device Technology IISBWe develop and analyze sustainable battery systems in particular rechargeable aluminum ion battery system (AIB) as a low cost and non-flammable storage system. We have demonstrated energy densities of 135Wh/kg regarding the active mass by using graphite as cathode material. Our AIB can be charged and discharged in less than 20 seconds. The process is reversible and we have shown more than 10.000 cycles with a charging efficiency of over 90% in lab and coin cells. We test application-relevant cell designs such as pouch cells. The currently achieved performance of the AIB is already comparable to NiMH batteries. Thus, AIB have a great potential for stationary and mobile applications.
Die wichtigsten Komponenten einer Aluminium-Ionen-Batterie: Graphitpulver, Aluminium-Folie und ein spezieller Elektrolyt, der aus einer bei Raumtemperatur flüssigen Salzschmelze besteht.
© Maximilian Wassner / Fraunhofer THM
Energy Materials
Assembly of battery cells for cyclic voltammetry measurements.
Artwork of a low-cost Al-graphite battery with Urea and Acetamide-based electrolytes
Electrochemical characterization of laboratory cells (ElCells®)
Services
- Synthesis and functionalization of powders for use as electrode materials and other functional applications
- Preparation of slurries and manufacturing of electrodes with different coating processes
- Morphological and structural characterization of particles and layers using
- SEM
- Raman with in situ option
- XRD with in situ option (in preparation)
- FTIR, ATR-IR
- BET
- Laser diffraction
- Characterization of electrolytes
- Conductivity
- Conductivity
- Electrochemical characterization by CV and EIS using lab cells (ElCells®) and coin cells
