For a long time we saw concrete only as a structure, as a static base that supports buildings and bridges, but scientists from Aarhus University in Denmark decided to break with that vision, creating a living cement with incorporated bacteria, capable not only of supporting walls, but also of storing electricity, functioning as a supercapacitor within the construction.

The idea seems straight out of science fiction: Add to the cement a bacteria famous for moving electrons out of its cells. Once mixed with the material, this microscopic colony creates a network of charge carriers that transforms the concrete into a system capable of storing and releasing energy.

Initial tests have already shown that it outperforms conventional cement-based storage devices and there is an impressive detail, even after the microbes bite, the cement continues to function and if it receives nutrients, proteins, vitamins and salts, it literally comes back to life recovering up to 80% of its capacity.

This completely changes the way we look at infrastructure, imagine walls, foundations, and even fountains acting as built-in bacteria, storing energy captured by solar panels or supporting local electrical systems.

To prove that the idea was not just theory, the researchers connected six blocks of the material and managed to light an LED lamp. According to researcher Qi Luo, this is the first step to unite structure and function in a single material. He explained that an entire room built with the living cement could store up to 10 kW hours, enough energy to keep a corporate server running for a day.

This means that in the future entire buildings will be able to serve as large distributed batteries, reducing dependence on lithium and cobalt, which are expensive and limited. Of course, the technology is still in the experimental stage, but it already points towards a future in which buildings are no longer just passive, they begin to power themselves by actively participating in the energy ecosystem.

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