Ligna Energy and Altris are conducting a development project to create the world’s first ultrathin sodium-ion battery, based on Altris’ industrialised sodium-ion technology and with planned production at Ligna’s facility in Norrköping. Ligna already operates a roll-to-roll production line for thin supercapacitors, and the same process can be adapted for battery cells, making the company a natural manufacturing partner for the project. The development work has been ongoing for most of 2025 and has now received Vinnova funding to support scale-up and industrialisation ahead of commercial launch.
Vinnova highlights the growing strategic importance of establishing sodium-ion technology in Sweden as a sustainable alternative to lithium-based batteries. In its decision, the agency notes that the project offers strong novelty value, builds on a mature technological foundation, and includes actors across the entire value chain – from cell chemistry and production to implementation in electronic systems.
This value chain is represented by several partners in the project: Jemac, acting as system owner and product integrator, and RISE, serving as test and verification partner for the battery cells. Together, the partners enable a technically driven yet industrially grounded path toward commercial deployment.
“An ultrathin sodium-ion battery is the missing piece in our product portfolio. In combination with our supercapacitors and roll-to-roll production, we can create scalable energy solutions for wireless electronics and asset management applications. With Altris, Jemac and RISE in the project, we are connecting the full chain from advanced materials to final products on the market,” says Peter Ringstad, CEO of Ligna Energy.
Built on already industrialised technology from Altris
To establish a complete value chain, the project is based on a technological platform that has already reached industrial maturity. It originates from Altris, which has developed a patented sodium-ion technology rooted in research from Uppsala University. By combining a proven cell chemistry with a new ultrathin form factor, the project reduces development risk and significantly shortens the pathway to commercialisation.
Altris is also driving the development of a more sustainable battery value chain. In collaboration with Stora Enso, the company aims for future cells to incorporate bio-based anode materials, reducing dependence on critical raw materials while strengthening circularity and supply-chain resilience in Europe.
“This project shows how quickly sodium-ion can move from a mature chemistry into new commercial formats. With Ligna’s roll-to-roll expertise and our industrialised technology, we are building a Swedish pathway for thin batteries – ready to be integrated into real products,” comments Christer Bergquist, CEO of Altris.
Swedish electronics with Swedish energy storage – Jemac brings the technology into real-world applications
The next step in the value chain is to integrate the technology into actual products. Jemac participates as system owner and product integrator. Jemac is a Swedish engineering company that develops and industrialises hardware for IoT and electronic systems, from early concept to series production, with design and manufacturing in Sweden and a majority of its end customers in the Nordic region.
By involving a system owner early in the process, the battery can be tested and integrated into real applications, particularly in areas where thin format and low weight are crucial — such as asset trackers and wireless sensing technology.
“When Ligna and Altris develop an entirely new battery cell, our role is to make it useful in products that last. By integrating and testing the technology early, we can demonstrate how the ultrathin sodium-ion battery performs in robust IoT systems where every milliampere-hour counts. That is how innovation becomes industrial value – and reaches the market faster,” explains Daniel Larsson, CEO of Jemac.
Towards a European value chain for batteries in connected electronics
The battery from Ligna Energy and Altris may become one of the few in the world to be developed and produced in Europe for connected electronics and wireless systems. Unlike today’s solutions, the cell is based on materials that can already be sourced largely from European suppliers. This strengthens Europe’s ability to reduce its dependence on battery raw materials from China, a growing priority within EU industrial policy.
About Ligna Energy
Ligna Energy is a technology company based in Norrköping, Sweden, developing the next generation of climate-smart energy storage solutions. The company has patented roll-to-roll production technology enabling ultrathin batteries and supercapacitors for wireless electronics and IoT. With a focus on sustainability, quality and Swedish manufacturing, we aim to shape the future of energy storage for connected electronics.
About Altris
Altris was founded in 2017 and originates from research at the Ångström Advanced Battery Centre at Uppsala University. The company develops and commercialises patented sodium-ion technology based on the Prussian White cathode material and proprietary electrolyte. Altris offers materials, cell designs, production blueprints and complete battery cells, with the ambition to industrialise sodium-ion technology in Europe.
About Jemac
Jemac is a Swedish engineering company that develops and industrialises hardware solutions for IoT and electronic systems, from concept to series production. The company provides expertise in electronics design, firmware, mechanics, certification and manufacturing, and has extensive experience in launching field-proven products for demanding Nordic environments.
About RISE
RISE Research Institutes of Sweden is Sweden’s research institute and innovation partner. RISE provides independent testing, verification and development of technologies across a wide range of fields, including energy storage and battery systems. By combining advanced laboratories with industry-oriented projects, RISE strengthens Swedish competitiveness and sustainable development.
