All-Solid-State Batteries
Next-generation power source, in support of a sustainable society
Maxell’s proprietary technologies include surface treatment, mixing, dispersion, coating, molding and encapsulation.
These specialized technologies are what enable Maxell’s all-solid-state batteries to achieve both high capacity and high load1. All-solid-state batteries inherently exceed conventional lithium-ion batteries in longevity2 and heat resistance, making Maxell’s all-solid-state battery apt for applications that were once inaccessible due to the limitations of conventional lithium-ion batteries. Maxell has lined up 3 types of exterior to propose a specification to meet customer’s request.
What are all-solid-state batteries?
Maxell All-Solid-State Batteries
Maxell is pioneering the future of energy storage with sulfide-based all-solid-state batteries that deliver safety, high performance, and long-term reliability. Unlike conventional lithium-ion batteries, they use a solid electrolyte, eliminating flammable liquids and enabling greater heat resistance, higher output, and longer cycle life.
Compact and durable, these next-generation batteries are ideally suited for factory automation, medical devices, wearables, and automotive applications powering everything from sterilizable instruments to autonomous driving sensors.
With decades of expertise in battery innovation and manufacturing, Maxell combines advanced materials, precision engineering, and mass-production capabilities to create energy solutions that support a safer, smarter, and more sustainable future.
Combining Maxell’s analog core technologies, such as Mixing & Dispersion Technology and High Precision Molding & Forming Technology, and know-hows cultivated through manufacturing lithium-ion batteries and micro batteries for many years, high performance and high reliability of its all-solid-state battery has been achieved.
By using ceramic package for its exterior, balancing of high heat resistance and high sealing properties have been actualized, while maintaining capacity and output characteristics of the coin type all-solid-state battery.
Moreover, by adopting a bipolar structure, coin type all-solid-state battery specialized for high voltage and high input/output4 has successfully been achieved to meet diversifying demand of the market.
Key features of Maxell’s all-solid-state batteries
Wide discharge temperature range
Discharging in a discharge temperature range from low temperature of -50 deg. C to high temperature of +125 deg. C, that existing lithium-ion batteries cannot handle, is now possible.
Enhanced durability and endurance∗1
Maxell’s all-solid-state batteries have enhanced durability and endurance, which was difficult to achieve with existing batteries. As they can reduce the need for frequent maintenance such as battery replacement, they can contribute to infrastructure monitoring in harsh environments and measures against decrease in the working population.
High capacity and high output∗2
Discharge at a high rate is made possible by adopting sulfide-based solid electrolytes with high ionic conductivity. Devices can thus be converted into IoT devices such as real-time-monitoring instruments with low-power-consumption wireless communication including Bluetooth® Low Energy, LPWA, etc.
No liquid leakage, explosion, or ignition
There are no concerns such as liquid leakage, explosion, or ignition, so high safety∗3 is a feature of the batteries. We also envision use in the medical and healthcare fields where safety, in addition to use in harsh environments, is a requirement.
- Enhanced durability and endurance: The Maxell conventional coin-type lithium-ion battery (927 size) can maintain 90% capacity for 10 days, while the all-solid-state battery can maintain 90% capacity for 100 days, based on accelerated testing at 60 deg. C.
- High capacity and high output: These characteristics are equivalent to the rated capacity and the maximum discharge current of Maxell’s conventional coin type lithium-ion rechargeable battery (927 size).
- Safety: No ignition or smoke generation is seen in various safety tests such as heating at 350 deg. C, nail penetration, and external short circuit.
- Bluetooth is a registered trademark of US Bluetooth SIG, Inc.
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All-Solid-State Battery Range
- Ensures heat resistance and airtightness with a ceramic package housing.
- Mountable on a circuit board by reflow soldering.
- Capacity enhancement achieved by connecting ceramic-packaged all-solid-state batteries in parallel.
- Suitable for power backup for industrial equipment and a wide range of applications.
- Supports applications requiring high output and capacity, such as infrastructure monitoring and sensing.
Frequently Asked Questions
All-solid-state Batteries
In FY2023.
They are suitable for use in wearable devices that require high output as well as high safety and reliability for communication. Additionally, they are suitable for IoT, in-vehicle, FA devices that they are used in harsh environments and used for long period of time. Besides, ceramic packaged type is surface mountable on circuit board by reflow soldering.
Maxell uses argyrodite-type solid electrolyte made by Mitsui Kinzoku, which is not only highly ion conductive but also soft and easy to mold at room temperature. This makes it more advantageous to demonstrate Maxell’s analog core technologies such as dry mixing and dispersion, molding and sealing. Additionally, since the electrolyte does not require sintering process that is indispensable for oxide based solid electrolytes, the choice of materials is expanded, and battery characteristics can be dramatically improved.
The Maxell coin type all-solid-state battery has been realized by combining our proprietary material technologies with process technologies such as mixing, molding, and sealing. The material and process technology have been cultivated mainly by lithium-ion battery and micro battery business, respectively. Additionally, “Monozukuri-ryoku”, the manufacturing capabilities cultivated through manufacturing lithium-based batteries, is also being utilized.
The features of Maxell’s all-solid-state batteries are that they use argyrodite-type sulfide based solid electrolyte to achieve long life, high heat resistance, high capacity, and high output.
Maxell’s all-solid-state batteries can be differentiated by the fact that they are developed, designed and manufactured using Maxell’s unique analog core technologies of “mixing and dispersion” and “precision coating”.
Bipolar technology
Especially the lower temperature range has been successfully expanded because Maxell’s bipolar technology enables all-solid-state batteries to have higher voltage while suppressing resistance increase.
Bipolar technology is considered to be highly compatible in applications where high output and high energy are required, such as HEVs.
No limitations in theory. Maxell will propose specifications to meet customer’s request.
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All-Solid-State Battery News
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