STORAGE: Stable and Sustainable Organic Radical Battery
- Sanna Hellsten
- May 30
- 2 min read
Updated: Sep 10
The transition to renewable energy sources requires efficient energy storage technologies produced from widely available and sustainable materials. In the STORAGE project, we aim to develop a stable and sustainable organic radical battery which does not use critical raw materials (CRMs) typical in other battery types. The battery will utilize polymer-supported organic radical as the cathode material, biomaterial-based hard carbon as the anode material and sodium-conducting cellulose-based gel electrolyte. To realize the CRM-free battery with exceptional electrochemical performance, we will refine the synthesis and properties of these battery components, upscale the syntheses to 10-100 gram scale, as well as investigate and develop sodium compensation technologies critical for the creation of high-performing sodium-ion batteries.
Main results
We have upscaled the synthesis of the polymer-supported radical to gram scale, which will allow us to focus on developing an electrode manufacturing process.
Lab-scale pre-processing and electrode manufacturing processes have been developed for biocarbon materials.
Cell setups to allow effective electrochemical pre-sodiation are under development.
Laboratory snapshots
September 2025
New polymer-supported organic radical electrodes are now undergoing the first tests for energy storage.
Publications
A. Kobets, S. Mousavi, V. Siipola, T. Rauhala, F. Obrezkov, J. Vapaavuori, T. Kallio, Plant-Based Biocarbon Materials for Sodium-Ion Batteries, Oral presentation, 76th Annual Meeting of the International Society of Electrochemistry, Mainz, Germany, September 7-12, 2025.
Watch the project pitch at FinnCERES Annual Seminar 2025:
Research Project Managers
Jaana Vapaavuori, Aalto
Taina Rauhala, VTT
