Japan’s TDK is claiming a breakthrough in materials used in its small solid-state batteries, with the Apple supplier predicting significant performance increases for devices from wireless headphones to smartwatches. The new material provides an energy density-the amount that can be squeezed into a given space-of 1,000 watt-hours per liter, which is about 100 times greater than TDK’s current battery in mass production. The breakthrough is the latest step forward for a technology industry experts think can revolutionize energy storage, but which faces significant obstacles on the path to mass production, particularly at larger battery sizes.

Source: TDK claims insane energy density in solid-state battery breakthrough