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DateDate: 18-05-2019, 05:58

Modern smartphones, laptops and other mobile devices often have a good performance margin, but usually after a year of active use, the batteries noticeably lose in capacity. Professor Atsuo Yamada from the University of Tokyo has taken up the challenge. He and his team found a way to not only extend battery life, but also make them self-healing.
The most popular type of battery today is lithium-ion, and sodium can replace it. For both types, charging cycles reduce capacity over time. The fact is that inside the battery there are metal layers. During charging and discharging, they decompose and cracks form in them, which reduces the ability to save energy. These defects are due to the fact that the material is held by van der Waals force, which is not able to withstand the load on the material during charging and battery operation.
Japanese engineers have found a way to eliminate the deformation of the metal layers inside the batteries. They clearly demonstrated that when used in the production of oxygen oxide batteries with a redox layer (Na2RuO3), degradation practically does not occur. During charging and discharging, not only is the degradation of the battery reduced, but also the properties of self-healing appear. This is because the new material is held by a force known as Coulomb attraction.
“This means that batteries can have a much longer service life. Increasing the energy density of batteries is of paramount importance for the implementation of electrification of transport, said Professor Atsuo Yamada.
Source: w3bsit3-dns.com





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