Read the latest blog posts from Cellfion’s team

Cellfion won two awards at the regional Venture Cup startup competition 2022

We are very honored and proud to announce that Cellfion won not one, but two, prizes at the Venture Cup SwedenStartup 2022 regional final competition last week! 🥳

The Cellfion team took home the prize of Beyond Academic and Impact Maker. We are very grateful for the support and the recognision this opportunity brings! Is has been an honor to compete with such inspirational and hard working startups and meet such amazing people.

Together with the other winners such as Flexspenser, Norbite and Oppioo we will be going to the Swedish finals in October to compete for the national award that comes with a cash prize and most importantly the honor of being chosen as Swedens most promising startup. We can’t wait to get there and we will definitely put our A-game on!

Hope to see you there cheering for us!😊

Cellfion winning Venture cup prizes

Cellfion attended the World Hydrogen Summit 2022 in Rotterdam

Liam Hardey and Alexandra Troulioti from the Cellfion team attended the World Hydrogen Summit 2022 in Rotterdam this week. What an experience it has been. These days have been full of interesting conversations and innovative ideas with international hydrogen leaders from across the hydrogen value chain.

We’ve seen many impressive innovations lika fuel cells and PEM electrolysers up close (and been in one through VR-glasses) and connected with people that play a key role in the development and future of hydrogen.

As a startup, this summit has brought us knowledge, important connections and given us even more drive towards making our bio-based membrane a crucial part of the hydrogen infrastructure.

See more from the summit and exhibitions here

Liam Hardey has been selected for Forbes 30 under 30 Europe list 2022!

Liam Hardey forbes 30 under 30

Cellfion’s CEO, Liam Hardey, recieved the very excited news of being selected to the Forbes 30 Under 30 Europe list for 2022 for Manufacturing & Industry this week. Of course it is an honor and a great achievement that the Cellfion team is very proud of.

Liam himself describes it as ”An incredible compliment for the hard work that is being put in by everyone at Cellfion!”.

Forbes Europe 30 Under 30 Manufacturing list features young people innovating with new materials, new software paradigms and even new kinds of spacecraft engines. Liam has been selected with the following motivations in forbes site:  ”Then there’s Liam Hardey, whose company Cellfion AB is turning cellulose from wood into sustainable, bio-based membranes to be used as components in clean energy products”.

Visit Forbes site to find out more about the latest innovations and the inspiring people who make it happen!

Cellfion is in Venture Cup startup’s regional finals!

We are happy to announce that Cellfion is now one of the finalists for Venture Cup Sweden’s startup regional finals taking place on May 17th! The winner gets to go on to compete in the finals this autumn and have the chance to win the Startup of the year award.

As we speak, on the 3rd of May, the Cellfion team is on its way to Venture Cup in Stockholm to present our pitch to the jury that will decide if we are going to the finals or not.

We are a bit nervous but very excited!

Venture cup startup competition

Cellfion recieves a grant from the Swedish Energy Agency

The Swedish Energy Agency (the Swedish Energy Agency) has decided to grant support in the form of a grant to Cellfion AB for the implementation of the project “Forrest based membranes for organic energy storage ”during the period 1 May 2022 – 31 October 2022.

This project aims to validate and optimize Cellfion’s forest-based nanocellulose membrane. The starting point will be to optimize the membrane properties based on the specific requirements set by different industrial uses redox electrolytes. Our goals are to reduce the ionic resistance of the membrane and prevent the redox species on the two sides from penetrating the membrane and thus ends up on the wrong side (crossover) and causes performance loss. To also be able to offer a green alternative to today’s perfluorinated fossil-based ion-conducting membranes would help the commercialization of redox flow batteries and thus offer a green energy storage option.


The effect of crosslinking on ion transport in nanocellulose-based membranes

”Ion selective membranes are at the heart of energy conversion and harvesting, water treatment, and biotechnologies. The currently available membranes are mostly based on expensive and non-biodegradable polymers. Here, we report a cation-selective and low-cost membrane prepared from renewable nanocellulose and 1,2,3,4-butanetetracarboxylic acid which simultaneously serves as crosslinker and source of anionic surface groups.”


• A renewable, low cost crosslinked nanocellulose membrane was reported.
• The crosslinked membranes show excellent ion conductivity and selectivity.
• A higher amount of crosslinker results in a greater ion conductivity.
• An optimal ionic selectivity obtained at an addition of the crosslinker of 20 wt%.
• This nanocellulose membrane is promising for ionic devices and upscaled applications.

Authors: Hongli Yang, Jesper Edberg, Viktor Gueskine, Mikhail Vagin, Mehmet Girayhan Say, Johan Erlandsson, Lars Wågberg, Isak Engquist, Magnus Berggren

The effect of crosslinking on ion transport in nanocellulose-based membranes

Bio-based membrane for hydrogen fuel cells – the DCC spinoff Cellfion

In the future, their nanocellulose membranes will enable the fabrication of renewable energy storage devices, like hydrogen fuel cells and redox flow batteries, as well as replace the current non-renewable membranes on the market”.

We had the honor to be interviewd by DCC (Digital Cellulose Center) the other day where CEO, Liam Hardey talked about Cellfion’s journey and the unique characterictics of its’ ion-selective membranes. The research behind Cellfion’s membrane originates from the Digital Cellulose Center (DCC) research on Ion-selective membranes.

Read more about Cellfion’s bio-based membrane solutions in the article that Digital Cellulose Center wrote about us 🍃

Why is a bio-based membrane important for green en energy storage solutions?

Every year large amounts of energy is lost from renewable sources due to the limitations of energy storage whilst fossil fuels were burned for energy. Redox Flow Batteries and hydrogen are suitable sources to eliminate this problem. However, they have bottlenecks due to the high prices and poor performing materials. A major contributor to this is the membrane, the material that is found at the heart of almost all electrochemical storage and conversion cells, for example, Fuel Cells, PEM Electrolysers and Large-Scale batteries among others.

Due to the unique characteristics of Cellfion’s membranes and the know-how of the technical team, we can optimize our membrane’s features for a more compatible integration supporting the transition to clean energy devices such as FuelCells and Electrolysers.

The strength of Cellfion’s membranes


Cellfion’s nanocellulose based, ion-selective, membranes are developed for use in energy conversion and storage devices such as electrolysers, fuel cells and redox flow batteries.

The strength of Cellfion AB ’s membrane technology, in addition to being made from renewable resources, is the ability to tune the properties of the membranes to suit specific demands. An example is the wide range of chemistries available for redox flow batteries which all have different requirements on the membrane. Cellfion’s membrane can be specifically tuned for each system.

What exactly are cellulose nanofibrils and how do our membranes work?

Cellulose is a biopolymer, one of the main components of wood together with hemicellulose and lignin. Cellulose in wood is part of a hierarchical structure where the smallest cellulose-based structure is the cellulose nanofibril. The individualized nanofibrils are obtained as a hydrogel which is used to form our membranes.

The combination of the dimensions of the nanofibrils and the possibility to modify their surfaces with a wide range of chemical moieties, enables the production of materials with specifically tuned properties. Pore size and ion-selectivity are two properties which are key for our high-performing, ion-selective membrane.
Read more about our solution

Cellfion- nano fibrils biopolymer

How the Cellfion journey started for CEO, Liam Hardey


”I have always had this vision for Cellfionof a “Clean Tech Factory” where we could produce a range of bio-based materials, for a more sustainable future”. 

Cellfion is a young startup company that is growing, fast. While we look forward and plan for the future we also like to glance at the journey that we have made this far.
The research that lead to Cellfion’s establishment started over 8 years ago by Sweden’s three largest research institutesLiU, RISE and KTH. Many of the researchers are still actively working with Cellfion today. Fast forward to 2020, Liam Hardey is introduced to Cellfion through an entrepreneur’s trainee program at LEAD (Business Incubator), and Cellfion gets its’ own CEO.

During six months we conducted an extensive market investigation to better understand the potential for the new membrane technologyWhat we found was an exponentially growing market and a solid need for performance improvements and lower costs”. Since then, the Cellfion team has grown from 1 to 5 members and is making its way into the growing market of green energy solutions.

Cellfion is a company that has the potential to become a successful and scalable company in a rapidly growing market. I expect us to keep building our team with fantastic talented members and to begin delivering products to the market during 2023/24”.