NaCRe* process

Innovative recycling of sodium-ion (Na-ion) batteries

Project purpose

The NaCRe Process project represents the R&D phase dedicated to recycling sodium-ion (Na-ion) battery waste from the Tiamat gigafactory.

These batteries use an advanced polyanionic technology, NVPF (Na3V2(PO4)2F3), requiring appropriate recycling solutions.

In collaboration with Tiamat, Mecaware is developing an innovative chemical process to extract strategic metals, notably vanadium, from production scrap. The aim is to close the loop of the circular economy by reintegrating these recycled materials into the synthesis of cathode active material (CAM), then into the manufacture of new sodium-ion battery cells.

The NaCRe project builds on a successful proof-of-concept from the SEPAR8 Process project, winner of the FTJ Hauts-de-France grant. This previous project demonstrated the feasibility of recycling active cathode materials from Na-ion cells, confirming the potential of this recycling technology to reduce the environmental impact of battery production.

With NaCRe, Mecaware strengthens its commitment to recycling new-generation batteries, contributing to a sustainable energy transition and securing supplies of strategic metals in Europe.

NaCRe* process

Project objectives

  • Optimize the collection and sorting of Tiamat's production waste to ensure a controlled and traceable waste stream.
  • Adapt the Mecaware process to the specific chemistry of sodium-ion batteries, achieving a metal recovery rate of over 50%, in accordance with the Battery Waste Regulation.
  • Synthesize new cathode active materials (CAM) and manufacture sodium-ion cells using recycled materials, fully integrating the circular economy into the value chain.
  • Validate industrial feasibility by achieving TRL 5 across the entire process, demonstrating technological maturity for large-scale application.
  • Assessing the economic viability of recycling production waste, laying the groundwork for a profitable and sustainable industrial model
  • To study the prospects for recycling end-of-life sodium-ion batteries by analyzing the future availability of this waste in France.
  • Measure the environmental impact of the process using a life cycle assessment (LCA) to ensure environmentally responsible practices.
  • Ensure the safety and performance of new batteries made with recycled salts, by assessing industrial risks and electrochemical performance.

Results
already achieved

Project roadmap

September 2025

Project launch

November 2025

Validation of a process suitable for recycling cathode scraps

May 2026

Validation of a recycling process adapted to cell scraps, a waste product representative of real-life conditions at the Tiamat gigafactory.

September 2026

Transposition of the process to Mecaware's Vénissieux Demonstrator and TRL 5 achievement

November 2026

Validated protocol for synthesizing active ingredients from recycled metals

May 2027

Prototyping Na-ion cells with recycled content

August 2027

The project will conclude with the completion of technical and economic studies and a life cycle assessment of the process to demonstrate the benefits of incorporating recycled material into cell production.

Our strategy for recycling end-of-life batteries
 

Consortium members

No items found.

Our partners

Mecaware

Mecaware is an industrial start-up specialising in the production of recycled strategic metals from Gigafactory scrap and end-of-life batteries.

Role in the project: Mecaware is responsible for the development of the innovative recycling brick and the production of metal salts from Tiamat's Na-ion battery waste.

Mecaware NaCRe
+
TIAMAT

Gigafactory for sodium-ion batteries, located in Amiens, in the Hauts-de-France region. A world pioneer in the production of lithium- and cobalt-free batteries, Tiamat innovates for a more sustainable future.

Role in project : Qualify and quantify your production waste, feed it into the recycling process and synthesise active materials and cells from recycled materials.

https://www.tiamat-energy.com/
TIAMAT
+