DSM Develops Prototype Supercapacitor at 16.2V·2000 Farads, Aiming for Mass Production Next Year

DSM (formerly Daesung FineTech) announced on the 18th that it has completed the development of a commercial prototype supercapacitor, successfully achieving a voltage of 16.2V and a capacity of 2000 farads per cell.

This prototype doubles the storage capacity compared to the first version released in the third quarter of last year, which had a voltage of 16.2V and a capacity of 1000 farads per cell, while maintaining performance stability at the same voltage level. Currently, most commercial supercapacitors in the global market consist of cylindrical structures with a voltage range of 2.7~3.0V per cell. There was a limitation that increasing the voltage by wiring multiple cells together would proportionally reduce the farad count. For example, connecting six 2.7V·3000 farad cells to achieve 16.2V would result in a capacity of only around 500 farads.

DSM overcame this limitation by adopting a special structure with direct cell connections. It achieved 16.2V·2000 farads per cell using a single structure in the standard cell design, and engineered the system to increase both voltage and capacity by expanding cells horizontally and vertically. This allows for customized module configurations tailored to specific applications such as AI data centers and energy storage systems (ESS).

DSM has already completed the setup of a production line for this prototype at its factory in Changwon. The company plans to obtain objective data through nationally recognized research institutions in the first half of this year to identify initial application areas, and it aims to start mass production next year after conducting demand analysis. An additional production line capable of producing 3000 units per month is also scheduled to be established in the second half of this year. In the medium to long term, DSM intends to expand the use of supercapacitors to areas such as renewable energy grids, electric vehicles, drones, robots, and aerospace industries.