It surrounds us almost everywhere. And we are talking about moisture in the air, which can become a source of energy and power for small electronic devices. So far, prototypes in this technology have not given satisfactory results, but scientists from Singapore have finally managed to break the chain of loss. Will the power output problem for mobile devices soon be solved once and for all?
in pages advanced materials The results of the work of scientists from National University of Singapore (NUS)Who succeeded in developing a device that produces electricity only from the moisture in the air. This technology is also known by its acronym MEG (Moisture Driven Electricity) So far it has not given satisfactory results. Through time…
The problem is in the prototypes MEG It was not powerful enough to power even the smallest electronic devices. Singapore researchers used a different technique to construct the material.
Their invention was based on a thin canvas only 0.3 mm thick. They coated it with a layer of carbon particles and sea salt. Then they divided the material into two parts, however, one was covered with a hygroscopic ionic hydrogel, and the other was not. Thanks to this, a distinction was made in terms of moisture.
Electricity is produced when the salt ions are separated as moisture is absorbed on the ‘wet tip’. Then the free, positively charged ions migrate towards the negatively charged carbon molecules. This motion generates an electric field.
The invention produces energy from moisture. Test results are promising
As the NUS scientists discovered, the electrical power was still going on when the “wet part” was already saturated with water. It was enough to leave the device in a humid environment for 30 days. One of the study’s co-authors, the professor. Sui Ching Tan Explain:
Thanks to this unique and asymmetric structure, the electrical performance of the MEG device is significantly improved compared to previous technologies. Thanks to this, it is possible to operate many common electronic health monitors or other small portable electronic devices.
Due to its thickness, the material is very flexible and flexible, which also allows it to be folded into various shapes.
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How much electricity does such a device give out? Produced a piece of cloth about 1.5-2 cm in size Voltage 0.7 volts. The next step for the researchers will be to try to find a practical application of the invention and to produce it on a large scale.
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