TDK has successfully developed a material for solid-state batteries with a 100 times higher energy density

TDK Corporation (TSE:6762) has successfully developed a material for CeraCharge, a next-generation solid-state battery with an energy density of 1,000 Wh/L, approximately 100 times greater than the energy density of TDK’s conventional solid-state battery .

TDK’s technology aims to provide a solution that can be used in various wearable devices, such as wireless earphones, hearing aids and even smartwatches, with the aim of replacing existing coin cell batteries.

By using TDK’s proprietary material technology, TDK has succeeded in developing a material for the new solid-state battery with a significantly higher energy density than TDK’s conventional mass-produced solid-state batteries (type: CeraCharge) thanks to the use of oxide-based solid electrolyte and lithium alloy anodes. The use of solid oxide-based electrolyte makes batteries extremely safe. It is intended for use in wearable and other devices that come in direct contact with the human body.
The battery can be applied to replace primary button cell batteries in accordance with EU battery regulations, which require their replacement with rechargeable batteries, which is expected to help reduce environmental impact.

TDK will strive to develop the battery cell design and package structure and progress toward mass production, focusing on the development of its new product, the solid-state battery. In addition, TDK aims to increase the capacity of batteries through multi-layer lamination technology and expand the operating temperature range by applying the production engineering technology that TDK has built up in the electronic components sector.

Main applications

• Various wearable devices such as wireless earphones, hearing aids and smartwatches
• Environmental sensors
• Replacement of button cell batteries

Key features and benefits

• The use of solid oxide-based electrolyte makes the battery extremely safe
• Smaller size and higher capacity contribute to smaller device size and longer operating time

About TDK Corporation

TDK Corporation is a global leader in electronic solutions for the smart society, based in Tokyo, Japan. Built on a foundation of mastery of materials sciences, TDK welcomes societal transformation by resolutely staying at the forefront of technological evolution and purposefully ‘Attract Tomorrow’. It was founded in 1935 to commercialize ferrite, an important material in electronic and magnetic products. TDK’s extensive, innovation-driven portfolio includes passive components such as ceramic, aluminum electrolytic and film capacitors, as well as magnetic, high-frequency and piezo and protection devices. The product spectrum also includes sensors and sensor systems such as temperature and pressure, magnetic and MEMS sensors. TDK also supplies power supplies and energy devices, magnetic heads and more. These products are marketed under the product brands TDK, EPCOS, InvenSense, Micronas, Tronics and TDK-Lambda. TDK focuses on demanding markets in automotive, industrial and consumer electronics and information and communications technology. The company has a network of design and production locations and sales offices in Asia, Europe and North and South America. In fiscal 2024, TDK had total revenues of $14.6 billion and employed approximately 101,000 people worldwide.

More information about existing CeraCharge products can be found below
https://www.tdk.com/en/featured_stories/entry_024.html

Media contacts