Part of the development of new lithium batteries is focused on batteries of the type solid-statei.e. with a solid electrolyte, which should ensure increased safety. One such could be a new battery from the company Samsung Electro-Mechanics. It uses a non-flammable electrolyte and a production method based on cutting individual parts into the required shapes and layering, which eliminates folding, the battery also does not suffer from significant changes in volume during charging and discharging. This together allows the batteries to be smaller (no need to leave as much room for expansion) and also to be shaped in any way, which is quite a useful feature for wearables.
Samsung claims to have achieved the best energy density on the market with with a value of 200 Wh/lhowever the question here is how it defines the class for which it is supposed to apply (what is the competition, how narrow is the class in which it compares). E.g. for the Apple Watch, the volumetric energy density comes out to me to be around 425-525 Wh/l (with a volume of approx. 2.0-2.4 cm3, they have around 1.0-1.1 Wh).
In battery development, Samsung has filed over 40 different patents over the past 3 years. As for these solid-state batteries for wearables, they should hit the market in 2026, most likely in the Galaxy Watch, the Galaxy Ring or the Galaxy Buds. Let’s remind you that Samsung is preparing solid-state batteries for electric cars as well. There they talk about a mass energy density of up to 500 Wh/kg (today the maximum in the consumer area is about 360 Wh/kg), they are supposed to charge in 9 minutes and the lifespan should be up to 20 years. In their case, the launch is expected in 2027.
Source: www.svethardware.cz
