Scientists have developed a new type of tiny hydrogen batteries that feed on the cleavage of atmospheric moisture. In the future, this technology will help speed up the charging devices, extend the service life and reduce energy loss during transmission.
In modern gadgets and computing technology there are billions of transistors that control the electrical signal, and all of them are powered by one battery. Such a configuration works well, but when transferring a battery to a variety of components, a part of the energy is lost, therefore there are opportunities for improvement. Researchers from the Massachusetts Institute of Technology propose to connect each transistor to its own battery to increase the efficiency of the entire system.
They developed a nanoscale battery interacting with water molecules present in the surrounding air. When the moisture is in contact with the reactive external metal part of the battery, it is divided into H2 and O. The released hydrogen falls into the trap inside the device where it is stored until the moment of use. In such a state, the battery is charged.
In order to free up energy, the reaction proceeds in the opposite direction. Hydrogen molecules move back through the section of the reactive metal, where they are connected to free oxygen.
At the moment, researchers have created batteries with a thickness of 50 nm and showed that they can be scaled from centimeters to nanometers, as well as give non-standard forms. This feature allows you to attach them directly to transistors or tiny sensors on flexible substrates.
Invented hydrogen batteries also demonstrated a good energy density, which in recalculation per unit volume exceeds many batteries used today.
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