Solid-state batteries are being developed for use by various companies. It is safer than current Li-Ion batteries and more importantly has a higher energy density. This allows smaller or higher capacity car batteries in the same size to be produced.
TDK this week announced they have successfully developed a new material that will be used in their CeraCharge solid-state batteries. This material has an energy density of 1000 Wh/L which is 100 times higher than the material they use now. The technology targets use in wireless earphones, smart watches and hearing aids. In comparison Li-Ion batteries have an energy density between 250–693 Wh/L.
The earliest use was as a replacement for round cell batteries used in various devices such as watches. According to TDK, this technology will be able to meet the new EU bill that requires batteries on devices to be replaced more easily. With a higher capacity, it can also last longer while reducing pollution.