Introducing a new concept for sustainable energy storage technologies

Purpose and goal

The purpose of the project was to develop a new hybrid supercap technology as an alternative to the Li-ion batteries. Using carbon, which can be derived from renewable biomass, and water-based electrolyte, we developed a new type of hybrid cells with a record setting gravimetric and volumetric capacitances, compared to the existing solutions on the market. Our prototypes are specifically constructed for low power consumption electronics which can be combined with energy harvesting like solar, thermal or vibrational, for uninterrupted energy supply.

Expected results and effects

Our results significantly surpass existing supercaps solutions in terms of gravimetric and volumetric capacitances. This gives us strong motivation to pursue further development. One challenge we faced was a proper sealing of our cells. Due to the electrolyte leakage we used more materials to close the cells than actually needed, so we believe that 30% better performance can be easily achieved if this problem is cured. We believe that our energy storage solution, being sustainable, environmental friendly and efficient, indeed presents a game changer in the field of energy storage.

Planned approach and implementation

The project plan was followed closely and the main activities were implemented as planned. Market analysis was done and partner network is established. With the promising results coming from prototype testing we secured RISE as a partner for future large scale R&D projects. Some well established companies showed interest in our technology. Certification and IP protection pathways are identified. Self-discharge was unstable but most of the tested cells showed relatively stable voltage after discharge to 1.1 V. Temperature and mechanical stability needs to be further addressed.