Building materials are getting closer to doubling as batteries
Concrete already builds our world, and an MIT-invented variant known as electron-conducting carbon concrete (ec3, pronounced “e c cubed”) holds out the possibility of helping power it, too. Now that vision is one step closer. Made by combining cement, water, ultra-fine carbon black, and electrolytes, ec3 creates a conductive “nanonetwork” that could enable walls, sidewalks,
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