New paper published in Energy & Environmental Materials on dry electrode preparation for supercapacitors

New paper in Energy & Environmental Materials: Dry Electrode Processing for Free-Standing Supercapacitor Electrodes with Longer Life, Higher Volumetric Outputs, and Reduced Environmental Impact.

Our research explores the benefits of dry electrode processing for supercapacitors. As one of the pioneering energy storage systems to adopt dry electrode processing (e.g., through [formerly] Maxwell), supercapacitors have shown significant advancements in this area. Our study follows up with this processing technology and demonstrates notable improvements in electrode lifespan, volumetric energy density, and environmental sustainability by utilizing dry processing techniques. By bypassing conventional solvent-based methods, we achieved a 28% increase in energy density and a reduction in manufacturing-related CO₂ emissions, while also extending the lifespan of supercapacitors across various electrolytes, including organic, ionic liquids, and quasi-solid state.

In the broader context, this research contributes to the ongoing efforts to enhance energy storage technologies. Supercapacitors are crucial for bridging the gap between batteries and capacitors, offering rapid charge/discharge capabilities and long cycle life. The adoption of dry electrode processing can advance their sustainability and, at the same time, yield a better performance per the more intricate particle-particle contact and ability to obtain even ultra-thick electrodes (in our work: up to 700 µm).

Team Jena: Marius Hermesdorf, Desirée Leistenschneider; Team Saarbrücken: Emmanuel Pameté, Jean Gustavo De Andrade Ruthes, Anna Seltmann, Delvina Tarimo (PhD).