Previously, the authors used two types of bacteria that interacted and produced the necessary energy. But
Biobatteries. Credit: Anwar Elhadad et al, Journal of Power Sources (2022)
The system works like this:photosynthetic bacteria are located above all and produce organic food. It feeds on other bacteria that are in the middle block. And at the very bottom are bacteria that produce electricity. As a result, bacteria from the middle and bottom blocks generate chemicals that improve electron transfer.
The result was biobatteries measuring 3 by3 cm², which are similar to Lego bricks. They can be combined and reconfigured in different ways depending on the power required by the sensor or device.
According to the team, such biobatteries will help withthe spread of the Internet of Things, since the most difficult application for the implementation of this system will be wireless sensor networks - they are deployed in remote and harsh environments. Such sensors will be located far from the power grid and will be difficult to reach. Therefore, power autonomy will be a key requirement.
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