SUSTAIN-SEP Sustainable Separator Scale-Up for Safer Batteries

The project aims to scale up sustainable battery separators from TRL 5 to TRL 7/8 to meet the growing need for safe and climate‑smart energy solutions. The technology reduces both safety risks and the CO₂ footprint of next‑generation batteries. At the same time, it strengthens the Swedish and European battery value chain.

Expected effects and results

The project will scale up a sustainable separator technology from TRL 5 to TRL 7–8 by integrating Europe‑produced bio‑based UHMWPE, nanocellulose, and environmentally friendly binders into industrially coated separators. The aim is to develop a PFAS‑reduced and climate‑friendly solution that meets European sustainability requirements. This will strengthen the competitiveness of the Swedish and European battery ecosystem while establishing new value chains and increasing production readiness.

Planned approach and implementation

• Senior Materials will lead the industrial implementation
• Celanese supplies the bio‑based UHMWPE
• RISE will support the procurement and characterisation of nanocellulose and sustainable binders, as well as validation in relevant environments within the LCA/TEA framework. 

The materials will then be scaled up into continuously coated separator rolls and validated in battery cells. The scale‑up will be carried out in a state‑of‑the‑art production facility in Eskilstuna, Sweden, using advanced and sustainable raw materials sourced from Sweden and Europe.