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Researchers at MIT developed a supercapacitor from cement, carbon black, and water, providing a scalable and inexpensive energy storage solution for renewable energy sources. The combination of cement, which serves as a durable construction material, with carbon black, known for its electrical conductivity, enables the formation of a complex network of conductive filaments within the cement matrix.

This supercapacitor functions similarly to a battery but offers advantages such as quick energy charging and discharging. The technology significantly reduces carbon footprints compared to traditional lithium-based batteries. Potential applications include integrating supercapacitors into urban infrastructure, allowing for energy-generating roads and foundations that store renewable energy for later use.