News Release
February 20, 2024
Nippon Electric Glass Co., Ltd.

Nippon Electric Glass Starts Sample Shipment of All-solid-stateSodium(Na) Ion Secondary Batteries

All-solid-state sodium ion secondary battery (standard sample)

Nippon Electric Glass Co., Ltd. (Head Office: Otsu, Shiga, Japan; President: Akira Kishimoto;“NEG”) has started the sample shipment of all-solid-state sodium(Na) ion secondary batteries(“NIBs”).
The cathode, anode, and solid electrolyte of NEG’s NIBs are entirely made from stable oxides.
They are firmly integrated by NEG’s proprietary crystallized glass technology to form batteries.
NEG’s NIBs can operate in severe environments (−40°C to 200°C) and do not pose the risk ofignition or generation of toxic gases. They are innovative all-solid-state batteries using sodium, anabundant material for which there is no concern regarding resource availability.
The standard specifications of the products whose samples are shipped are 3 V and 200 mAh.
NEG can also meet the individual needs of respective customers, such as higher capacity models.
NEG has steadily promoted the development of all-solid-state batteries since the successful
operation at room temperature in 2017. Following the shipment of samples, NEG will start sales
by the end of 2024.
■ Features of NEG’s NIBs (all-solid-state sodium(Na) ion secondary batteries)
Long operation at 3 V

NEG’s NIBs enable long operation at 3 V.
NEG’s NIBs can drive industrial equipment and transfer large

Operating temperature:−40°C to 200°C

amounts of data even in severe environments, such as low andhigh temperatures and vacuum.
Theheat-resistantpackagecanwithstandtemperature range over 100°C (up to 200°C).

thehigh-No risk of ignition orgeneration of toxic
gases

Solid oxides characterized by excellent safety are used.
There is no risk of ignition because liquid electrolyte is notused. There is no risk of generating toxic gases either because
no sulfides, chlorides, fluorides, or the like are used.

Rare-metal-free

No rare metals, such as nickel or cobalt, are used.

High flexibility in

The flexibility of battery design is high because it is easy todesigning batteries

integrate and increase the area and capacity.
NEG’s NIBs can be charged at a slow charging speed (tricklecharged).

Chargeable with a low

Maintenance-free power generation and storage systems cancurrent

be realized in combination with energy harvesting technology(which converts very small sources of energy into electricity for
utilization).

■ Expected applications of NEG’s NIBs
■ Use under severe conditions, such as■ Batteries for electronic equipment, mobility,

outer space (vacuum × low

and stationary use that require high levels oftemperature), sea (high pressure × low

safety and flexibility in battery designtemperature), and medical care (hightemperature)■ Energy harvesting systems that use light,■ Integration into electronic circuit boards:

heat (temperature differences),

NEG’s NIBs are not affected by reflow

vibration, etc. as energy sources

soldering at 300°C, making it possible tomaintain stable charging/discharging
characteristics.

Light, heat, vibration etc.

Power generation device

Energy storage device(NEG’s NIB)*All the photos are images.