Fraunhofer-Led Consortium Launches ‘ProBatman’ to Advance Direct Recycling of Lithium-Ion Batteries

A German research consortium led by the Fraunhofer Institute for Silicate Research ISC has launched a multi-year project aimed at scaling up direct recycling of lithium-ion batteries, positioning the approach as a lower-carbon alternative to conventional recovery routes. The initiative, known as ProBatman, is designed to improve material purity and yield while preserving the functional structure of cathode materials, the institute said in project information released this week.

The program is coordinated by Netzsch-Gerätebau GmbH and brings together industrial and academic partners to refine each step of the recycling chain, from cell opening to material regeneration. Researchers estimate that processing the 340,000 metric tons of end-of-life batteries projected annually from 2040 onward could avoid up to 1.3 gigatons of CO₂-equivalent emissions, based on internal modeling cited by Fraunhofer ISC.

Unlike hydrometallurgical or pyrometallurgical systems, which chemically or thermally reduce batteries to elemental metals before re-synthesizing new materials, direct recycling seeks to recover cathode compounds in their existing composition. That strategy is drawing attention as battery chemistries evolve. With reduced cobalt and nickel content in newer lithium iron phosphate and high-manganese formulations, the economic case for traditional metal-focused recovery has weakened. Analysts say that trend is pressuring recyclers to pursue processes that retain higher material value rather than extracting base metals alone.

Within ProBatman, teams at the Fraunhofer Research and Development Centre for Electromobility are developing techniques to separate lithium-ion active materials from electrodes while minimizing structural damage. The process includes debinding and sorting steps designed to preserve cathode integrity. Inductive and laser-based systems are being tested to remove cathode coatings with greater precision. Recovered materials are then analyzed, purified and regenerated for reuse in new battery production.

Project partners include automaker BMW, technology consultancy EurA AG and the University of Würzburg. Additional industrial supporters range from advanced materials producers to laser systems and intralogistics suppliers. Funding is provided by the German Federal Ministry of Education and Research, reflecting Berlin’s broader push to secure battery supply chains and reduce import dependence for critical materials.

Researchers said the consortium will evaluate process parameters and material data through a prospective life cycle analysis to identify further efficiency gains and environmental trade-offs. The goal is to raise the technology readiness level and make direct recycling commercially viable for battery manufacturers and specialized recyclers. The project is scheduled to run through June 2028.

Europe has accelerated battery recycling policy in recent years, including stricter recovery targets and minimum recycled content requirements under updated EU battery regulations. Observers note that while mechanical pre-treatment and hydrometallurgical recovery remain dominant today, direct recycling could complement those systems if scalability and consistent quality can be demonstrated at industrial volumes.

Industry groups argue that achieving cost parity with virgin cathode materials will be critical. They also caution that feedstock variability, safety risks in handling high-energy cells and evolving battery chemistries pose technical hurdles. Still, proponents say preserving functional materials rather than reverting to elemental metals offers a pathway to lower emissions and stronger circularity.

If successful, ProBatman could provide a blueprint for integrating direct recycling into Europe’s growing battery ecosystem, particularly as electric vehicle volumes rise and early-generation packs reach end of life later this decade.

Source: electrive

SUNSHINE Spotlight: Germany’s ProBatman project signals a strategic shift toward direct battery recycling as Europe seeks lower-carbon, higher-value recovery pathways.