Lignin-derived supercapacitors with high-voltage energy storage having sub-nm holes designed to fit lithium ions

https://www.eurekalert.org/news-releases/1120147

"lithium-based electrolyte mixed with fluorinated diluent, preventing breakdown under high electrical pressure... operates safely at 4V without rapid self-discharge... 77.4 Wh/kg storage capacity close to batteries/ maintaining fast-charging capacitor benefits, retains >90% capacity after 10K cycles... sustainable blueprint for powering heavy-duty electric transit and smart power grids, where both rapid power delivery and long-lasting energy are required"