ASTRABAT newsletter #4

Newsletter — 18 Jul 2023

Newsletter nr. 4 has been released: read the latest updates on ASTRABAT's results and join us in Grenoble, France, at our final event.

Dear Reader,

During the past months, we’ve been upscaling the materials and the cells fabrication processes for the industrialization of all-solid-state batteries. The polymer electrolytes can be now produced in 1 kg-scaled batches (DAIKIN, Fraunhofer). Composites electrodes were fabricated in meters-scale and transferred to project partner Yunasko, where the polymer electrolyte impregnation and cell assembly were assessed. Post-mortem studies were conducted for a better understanding of the cell behaviour during the formation and cycling. The optimized process was adjusted to fabricate bipolar cell (CEA), in which the cathode and anode materials were deposited on a same current collector by screen printing (see picture). This design allows production of high-voltage cells with a lower pack price. The use of solid-electrolyte appears as the optimal solution to avoid electrolyte leakage between each unit occurring in the standard lithium-ion batteries.

The first ink-jet printed and screen-printed planar cells were fabricated and electrochemically tested. In the coming weeks, cells with other shapes in line with the modelling results (pillars, walls, honeycombs) will be addressed (University of Limoges, FhG-IKTS). In parallel, Leclanché has explored three aspects of the upscaled production line design: the process itself, the cell assembly and the quality control.
During the next few months, the cells capacities will be further increased and their safety and recyclability will be addressed (Lomartov, CEA, LEITAT).

The most important solutions developed within ASTRABAT until now have been gathered into a set of five info packs: take a look and discover more into detail what our project has been working on until now.

Suppose you are interested in knowing more about ASTRABAT’s final results. In that case, we warmly invite you to join us in Grenoble in September at the LCBAT12019 Cluster Innovation and Networking days, where we will be discussing the latest all-solid-state battery technology with our sister projects Sublime, Solidify and Safelimove. Registration is open, so do not miss this chance and book your spot.

Enjoy your reading,

Sophie Mailley
Commissariat à l’Energie Atomique et aux Energies Alternatives (CEA)
ASTRABAT Project Coordinator

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