Collaborative Project »LASIBAT«

»LASIBAT« - Laser-based in-line sintering of adapted ceramic materials for the manufacturing of solid-state-battery cells

The lance as it is removed from the furnace at the end of spray pyrolysis production.
© Ceramic Powder Technology AS.
The lance as it is removed from the furnace at the end of spray pyrolysis production.

In LASIBAT, functional ceramic materials, adapted layer deposition processes and a scalable inline laser sintering process including the necessary laser system technology (laser source, optics and temperature-based control) are being developed for the production of solid-state batteries.

Laser sintering enables a reduction of the thermal load on the material underneath the layer to be processed as well as a reduction of undesired diffusion processes and the formation of secondary phases that would otherwise reduce the performance of the battery. At the end of the project, system technology for an inline laser sintering process will be set up to demonstrate scalability for possible industrial use.

The materials for cathode and electrolyte layers are specially adapted to the new and comparatively fast blue laser sintering process. Due to the low optical penetration depth of blue laser radiation in the materials used, it enables layer-selective heating, which is necessary for sintering the thin-film electrolyte.

The project runs from 01.09.2022 to 31.08.2025.

Project goals

  • a new solid-state battery material system adapted to fast laser sintering that meets the lifetime requirements while fulfilling additional restrictions such as price and environmental requirements. 
  • the construction of a demonstrator to validate the solid-state battery cell concept with mixed cathode layer and laser sintering processes used, and 
  • the development of a test setup for a scalable laser-based inline sintering process with blue laser radiation incl. closed temperature control loop.

Coherent (Dilas Diodenlaser GmbH)

Coherent-Dilas develops high power diode laser systems for scientific and industrial applications. Seen here is stack of blue emitting diode laser bars for a newly developed high power blue diode laser.
© Ceramic Powder Technology AS.
Coherent-Dilas develops high power diode laser systems for scientific and industrial applications. Seen here is stack of blue emitting diode laser bars for a newly developed high power blue diode laser.

Dilas Diodenlaser GmbH, as part of the Coherent Group, is one of the major players in the field of high-power diode lasers and one of the few currently able to realise high-power blue diode laser systems, which would not be possible without strong international cooperation. Dilas has participated in numerous national and international research programmes. High-power diode lasers around 450 nm are of great strategic importance to Dilas. While long-term reliability tests at higher powers are still ongoing, the development of processing optics and peripherals for sensing and control will help accelerate proof-of-principle laser processing experiments in the application laboratory and strengthen Dilas' position in this fast-growing market.

NIT - New Infrared Technologies

200 mm Si-CMOS wafers with IR detectors processed on it by NIT
© New Infrared Technologies (NIT)
200 mm Si-CMOS wafers with IR detectors processed on it by NIT

NIT is an SME whose core business is the manufacture and marketing of high-speed uncooled detectors and systems sensitive in the mid-wave IR spectral range (MWIR/1-5 microns). Currently, NIT is the only company in the world that can manufacture uncooled and low-cost MWIR imaging FPAs and systems with an extended response range of 1 to 5 microns. 

The company's product range is based on in-house developed and produced single element detectors, linear arrays, focal plane arrays (FPA), imagers, cameras and inline industrial control systems based on them. NIT designs and manufactures custom detectors, sensors and systems (including OEM modules) to match its standard products to customers' solutions. NIT manufactures the fastest uncooled MWIR cameras on the market, capable of delivering 10 KHz resolution at 64x64 pixels and 4 KHz at 128x128 pixels. NIT's cameras are suitable for monitoring dynamic processes in real time and at a cost that is compatible with most industrial requirements.

Based on its high-speed IR cameras and sensors, NIT has developed and markets systems for monitoring and closed-loop control of laser-based processes, as in the case of LASIBAT. Systems such as CLAMIR or Discover IR Suite are widely used in the laser industry.

Events von New Infrared Technologies (NIT)

You can find more information here:

  • LASYS 4.-6. June 2024 in Stuttgart

SINTEF

SINTEF conducts research on all stages of battery cell production from slurry mixing to testing of finished batteries.
© Copyright Edvin W. Dahl / SINTEF.
SINTEF conducts research on all stages of battery cell production from slurry mixing to testing of finished batteries.

SINTEF is a multidisciplinary, non-profit foundation that conducts research and development in the technology field and is represented by two research groups in the LASIBAT project: Thin Film and Membrane Technology (TFMT) and Battery and Hydrogen Technology (BHT), both from the Sustainable Energy Technology Department. TFMT has developed advanced competencies and know-how in the synthesis, fabrication and characterisation of ceramic materials for energy technologies, including solid-state oxide electrolytes for Li-ion batteries. BHT is a leader in the development of Li-ion battery technology and materials for new battery chemistries and has recently opened the new state-of-the-art SINTEF battery laboratory. Both groups have participated as project coordinators and partners in numerous national and EU projects in the fields of fuel cells, membranes and batteries.

Cerpotech

View through the lance holder opening into the spray pyrolysis at production temperature.
© Ceramic Powder Technology AS.
View through the lance holder opening into the spray pyrolysis at production temperature.

Cerpotech has extensive experience in the development of advanced, high-quality ceramic oxides and will use this expertise in LASIBAT to contribute to the development of new ceramic material compositions for the laser sintering process. The development of such materials together with this excellent consortium will be of great importance for the achievement of the project goals and for the commercialisation of new products for Cerpotech. The project aims to improve battery manufacturing and we foresee a rapid implementation of such materials and manufacturing technologies in future Li battery systems.

Fraunhofer-Institut für Lasertechnik ILT

Development of a laser sintering process of electrolyte-cathode mixed material with an infrared line laser on stainless steel foil.
© Fraunhofer ILT, Aachen, Germany.
Development of a laser sintering process of electrolyte-cathode mixed material with an infrared line laser on stainless steel foil.

In the production of lithium-ion batteries, laser radiation is often used for welding battery packs and cutting cathode and anode foils. With regard to future battery technologies, e.g. ceramic solid-state batteries, new challenges arise. Material incompatibilities, heat-sensitive substrates and sustainable production require new manufacturing technologies. The Fraunhofer ILT has broad expertise in coating and thin-film technology. The targeted provision of high energy densities makes the laser a unique tool for processing heat-sensitive materials. Laser-based sintering of particulate ceramic Li-ion conductors appears to be a technology that enables overcoming material mismatches that limit battery performance. In the LASIBAT project, different parts of the battery are laser sintered and scalable inline processes with automatic process monitoring are developed.

"LASIBAT" is a joint project of the Fraunhofer ILT with the following partners

Coherent

 


SINTEF

 

NIT

 

Cerpotech