TDK Successfully Develops All-Solid-State Battery Material with Energy Density 100 Times Greater

On June 17, electronic component manufacturer TDK announced that it had succeeded in developing a revolutionary all-solid-state battery material with an energy density approximately 100 times greater than that of conventional products, with an energy density of 1,000 watt-hours per liter, which is expected to be used in devices such as wireless earphones and smart watches. The company said that the material is expected to be used in devices such as wireless earphones and smartwatches.

The new battery material is all-ceramic, employing an oxide solid electrolyte and a lithium alloy negative electrode. In addition to its high energy storage capacity, it features high thermal stability and safety due to the oxide. In addition to wearable devices, it can also be used in environmental sensors and as a replacement for existing coin cell batteries.

All-solid-state batteries are also expected to replace lithium-ion batteries, and automakers such as Toyota and Nissan are focusing on their development. However, TDK's newly developed ceramic material is brittle when enlarged, presenting technical challenges for use in batteries for automobiles and smartphones.

TDK boasts a 50-60% share of the global market for small lithium-ion batteries for smartphones and is known as a supplier to Apple and Tesla. The group plans to start shipping samples of new battery prototypes to customers next year, after which it hopes to move into mass production.

Noboru Saito, CEO of the company, commented, "We believe that our newly developed solid-state battery materials can make a significant contribution to society's energy transition," and added, "We will continue development toward early commercialization.

Materials

• Press Release Success in Development of All-Solid-State Battery Material with 100 Times Energy Density
• TDK claims insane energy density in solid-state battery breakthrough
• Apple supplier TDK says battery breakthrough can deliver higher performance for wearable devices