Murata develops solid-state battery with industry’s highest energy density
For wearables applications, oxide ceramic electrolyte solution
provides reliability and durability


Murata Manufacturing Co., Ltd.
Chairman of the Board and President:
Tsuneo Murata

Murata Manufacturing Co., Ltd. has developed an solid-state battery with industry’s highest energy density.*

The development of the solid-state battery involved integrating process technology used in Murata’s main products, such as multilayer ceramic capacitors and other multilayer devices, and diverse materials technology amassed through the development of cutting-edge electronic components. The battery employs an oxide ceramic electrolyte instead of the electrolytic solution utilized in conventional batteries, making it noncombustible and strongly heat-resistant.

Combining compact size and high energy density while delivering excellent performance even in harsh environments, the solid-state battery will contribute to the realization of new wearable devices that are smaller and more reliable than was previously possible. The new battery also delivers safety and durability far superior to conventional lithium-ion secondary batteries, making it ideal for hearable devices such as wireless earphones that require a high degree of safety and are intended to be used for extended periods of time, as well as a good match for the diverse needs of the emerging IoT society.

“The new product brings together multiple Murata technologies to deliver substantially larger capacity than previously developed solid-state batteries. By putting in place a production system capable of providing a stable supply of highly reliable products, Murata is contributing to the realization of a world in which everyone can safely utilize electronic devices under all sorts of environments,” said Norio Nakajima, Representative Director, Senior Executive Vice President and Director of the Module Business Unit.

Range of ordinary secondary batteries and target range of solid-state battery

Overview of solid-state battery

Size 5 mm to 10 mm (L) × 5 mm to 10 mm (W) × 2 mm to 6 mm (H)
Capacity 2 mAh to 25 mAh (25°C)
Rated voltage
3.8 V
Electrolyte Oxide ceramic
Applications Anticipated applications include wearable devices and IoT devices.
Available as surface mount device

Production facility and schedule

Production facility Murata Manufacturing Company, Ltd., Yasu Division (2288, Oshinohara, Yasu-shi, Shiga Prefecture)
Production quantity Approximately 100,000 units/month during fiscal 2020
Note: The solid-state battery shown in the photo is a sample, and the specifications and external appearance of the final product are subject to change.
* As of June 2019, according to research by Murata.

무라타에 대해서

주식 회사 무라타 제작소는 기능성 세라믹을 기반으로 전자 디바이스의 연구 개발 • 생산 • 판매를 행하고 있으며, 재료부터 제품까지 일관 생산 체제를 구축하고 있습니다. 또한, 무라타 제품의 90%이상은 해외에서 판매되고 있으며, 국내외로 글로벌 회사를 전개하고 있습니다.