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Solid state batteries: Samsung guarantees up to 800 km of autonomy

The Korean company is aware that the future of electric cars lies above all in the development of batteries.

One of the main components that is discussed in the automotive landscape when it comes to electric cars is the battery. The heart of the energy of a zero emission engine. In this sense, the steps taken by numerous car manufacturers aimed at improving the power of the battery packs are enormous, also trying to keep their size unchanged so as not to lose useful space. Now Samsunghas announced the development of a solution to make solid-state batteries reliable. The Korean company is aware that the future of electric cars lies mainly in the development of batteries.

Up to 800 km of autonomy

solid state batteries

The technicians of the Japanese headquarters have in fact managed to develop a solid-state battery with halved dimensions compared to one corresponding to lithium-ion, capable of offering up to 800 km of autonomy and guaranteeing approximately 1,000 recharges without loss of performance, equal to entire useful life of the vehicle.

Compared to batteries that use lithium-ion technology they use liquid electrolytes Solid-state batteries support higher energy density and use solid electrolytes, which are safer. This means being able to make battery packs of greater energy capacity than current but smaller and lighter.

The criticism of metal anodes

In particular, the battery designed by researchers from SAIT (Samsung Advanced Institute of Technology) and SRJ (Samsung R&D Institute Japan) has solved an intrinsic criticality to solid-state batteries. That of the premature wear of the anodes, affected by the debris (pointed growths) that quickly form on the electrodes causing the collapse of the battery itself.

The Samsung researchers have therefore proposed a study where they highlight how to use a composite layer of silver and carbon as an anode, it allows to mitigate this problem and align the charging resistance of solid-state cells with common lithium-ion cells.

The solution of silver and carbon anodes

With a thickness of only 5 m (micrometers), the layer of ultrathin nanocomposite silver and carbon allowed the team to reduce the thickness of the anode and increase the energy density up to 900 Wh / L. In addition, it made it possible to reduce the volume of the prototype by about 50% less than a conventional lithium-ion battery. The end result of this experimentation is a solid state battery capable of offering autonomy up to 800 km with a duration of 1,000 cycles.