A new cost-effective and efficient supercapacitor made from carbon black and cement could store a day’s worth of energy in the concrete foundation of a building or provide contactless recharging for electric cars as they travel across it. The device could also facilitate the use of renewable energy sources such as solar, wind and tidal power, according to the researchers at the Massachusetts Institute of Technology (MIT) and the Wyss Institute, both in the US, who developed it.
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