cerenergy® - The Technology Platform for Ceramic High Temperature Battery
cerenergy® is the Fraunhofer IKTS technology platform for low-cost ceramic sodium batteries. The scope includes development of battery systems including battery modules and BMSs of more than 10 kWh with targeted costs of 300 € kWh 1. Thesegoals will be achieved by (i) Highly efficient production of the ceramic key component, the β”-alumina solid electrolyte and (ii) a robust, cheap cell design based on minimized costs. Besides pressing technology, extrusion is feasible, yielding in a higher productivity. Through ongoing optimization of the ceramic processing parameters, electrolytes with the desired properties were prepared. Dense electrolytes showed an ionic conductivity and the Na-β”-alumina phase content of 0.21 S cm 1 and 94 %, respectively. Further Developments: (i) A robust cell design, consisting of standard components (FEM stress analyses), (ii) a cathode by parameter optimization and electrochemical performance evaluation and (iii) post mortem analysis.
Dr. Matthias Schulz is manager of the group ‘Stationary Energy Storage Systems’ at the Fraunhofer Institute for Ceramic Technologies and Systems IKTS. He studied civil engineering before gaining his PhD at the Bauhaus University Weimar in 2010 in the field of ceramic based oxygen generation. Since 2014, his group develops solid electrolytes and high temperature batteries such as sodium-nickel chloride batteries from the key compounds to the cell design.