New Breakthrough in Energy Storage – MIT Engineers Create Supercapacitor out of Ancient Materials

https://scitechdaily.com/new-breakthrough-in-energy-storage-mit-engineers-create-supercapacitor-out-of-ancient-materials/

> Constructed from cement, carbon black, and water, the device holds the potential to offer affordable and scalable energy storage for renewable energy sources. Two of humanity's most ubiquitous historical materials, cement and carbon black (which resembles very fine charcoal), ...