Modern smartphones, laptops and other mobile devices often have a good stock performance, but usually after a year of active use, the batteries start to work worse.
Professor Atsuo Yamada from Tokyo University undertook the solution of this problem. He and his team found a way not only to extend the battery life, but also to make sure that they recovered on their own.
The most popular batteries today is lithium-ion, to replace him can come sodium. For both types, the charge cycles and subsequently reduce the capacity and continue the work of the battery. The thing is that inside the battery there are metal balls. During charging and discharging they decompose, and they form cracks, which reduces the ability to store energy.
These defects arise from the fact that the material is held by the force of van der Waals forces, which are not able to withstand the load on the material during the charging operation of the battery.
Japanese engineers have found a way to eliminate the deformation of the metal layers inside the battery. They demonstrated that when used in the manufacture of batteries mitarotonda (IV) sodium (Na2RuO3) degradation almost does not occur.
During charge and discharge not only decreases the degradation of the battery but also appear the properties of self-healing. This is because the new material is held by the Coulomb force of attraction
This means that the batteries can have a much longer service life. Increasing the energy density of the batteries is of paramount importance for the implementation of the electrification of transport,
– said Professor Atsuo Yamada.
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