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A battery without a battery is getting closer and closer: scientists are turning a WiFi signal into electricity



A team of scientists from the Massachusetts Institute of Technology, led by Spanish Thomas Palacios, has managed to develop a technology that converts a WiFi signal into electricity. This means that energy will be transmitted to tens of meters without cables: a cell phone battery can be charged using a WiFi signal, and even devices can be used without a battery running on the above network.

So far, with the help of this system, experts have managed to obtain an electrical load of about 40 mW from a 150-mW WiFi signal, which is far from enough to charge a mobile phone. What you can do is turn on the screen or power sensors. In any case, this is a very important first step when a new advanced material, known as molybdenum disulfide, comes into play.

This new technology allows you to capture the WiFi signal, which has alternating current, and convert it to direct current using a special antenna, called a rectifier or rectifier antenna, which captures several microwatts of electricity, sufficient to power some of the main sensors, but not for the load. cell phone or feed it. For its part, what makes molybdenum disulfide, which is cheap to produce, is to allow uninterrupted electricity to be obtained before the signal passes.

If you think big, that is, place a wall full of shelves, they will be able to catch the electricity of radio signals that move through the air, and electric lights or electronic devices around the house or office.

It also has many other effects that can improve medicine. For example, a patient can swallow a pill with one of these rekten, and when it is inside the stomach, activate it with a WiFi signal to take medical measurements.

Although this system is under development and its capabilities are still unknown, we are talking about technological progress of enormous proportions, which can improve the quality of life of people.


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