Cellfion is pioneering the very best sustainable materials for a new level of energy storage and conversion devices. Originating in the technical faculty and department ITN at Linköping University and the Royal Institute of Technology in Stockholm, the company aims, through constant innovation, to accelerate the development and spread of sustainable materials in the energy sector. Cellfion’s membrane solution is innovative through the use of the renewable resource nanocellulose obtained from wood. Cellfion’s membranes are handled non-toxicly and are recyclable, have high ion selectivity, ion conductivity, mechanical and chemical stability and have simple activation without any pretreatment with tunable properties. The company’s vision is to create the most innovative, scalable and sustainable materials for green energy technology.