Made of cement, carbon black, and water, the device could provide cheap and scalable energy storage for renewable energy sources. Energy-Storing Supercapacitor from Ancient Materials: Two of humanity’s most ubiquitous historical materials, cement and carbon black (which resembles very fine charcoal), may form the basis for a novel, low-cost energy storage system, according to a … Continue reading Energy-Storing Supercapacitor from Ancient Materials