Cellfion is solving a global challenge: the widespread use of PFAS-based materials in hydrogen, battery, and filtration technologies. These “forever chemicals” are facing increasing regulatory pressure due to their environmental persistence and health risks. Cellfion’s solution is a first-of-its-kind ion-exchange membrane and filtration media made from functionalised nanocellulose a renewable, bio-based material that offers both performance and cost advantages over PFAS alternatives.
Our technology emerged from pioneering research at KTH Royal Institute of Technology and Linköping University, where early work focused on cellulose-based electrodes and polymer composites for energy storage. This evolved into chemically modified nanocellulose membranes with wet-stable properties suitable for demanding electrochemical applications. The company was founded to commercialise this innovation, supported by grants and partnerships with institutions like KTH Ventures, LiU Invest, and the Wallenberg Foundation.
Cellfion’s membranes are now being deployed across several high-impact sectors:
Hydrogen technologies: fuel cell humidifiers
Energy storage: redox flow batteries
Water treatment: electrodialysis and ion-separation systems
Filtration: HEPA, ULPA, and EPA filters for industrial, healthcare, and residential use.
