Power Sources

Thin-Film 180µAh, 3.5V Battery Withstands Rapid Temp Change up to 140°C

Ilika announced an upgrade of the Stereax® P180’s technical specifications. The company now verified that the battery can power sensors subjected to rapid temperature changes between room temperature and +140°C.

This increase in proven operating temperature enables the Stereax P180 to operate industrial wireless sensors in even more hostile environment applications for monitoring temperature, pressure, or other data in industrial equipment. The battery can be used for industrial, automotive, infrastructure, and aerospace applications. Other applications include deposition systems used in the semiconductor industry, where rapid cooling or heating of components occurs.

Ilika has previously demonstrated the ability of the company’s Stereax P180 solid-state battery to operate at temperatures of up to +150°C for long, continuous periods and after controlled ramp rates between room temperature and +150°C. Following further testing, Ilika has now verified that the Stereax P180 can maintain its performance, even if subjected to practically instantaneous rapid heating or cooling steps as short as a few seconds.

Data from sensors are connecting machines, people and services in everyday life including smart homes, smart vehicles, medical technology, smart infrastructure and industry. In order to enable this connectivity, sensors and other electronic devices have to operate in sometimes hostile environments at high temperatures, such as manufacturing facilities, process plants, and vehicles.

P180 battery layer diagram

The company notes that conventional batteries can only operate at up to 60°C or require cumbersome packaging to work at higher temperatures.

However, Ilika’s Stereax P180, a solid-state battery of 180µAh rated capacity, was previously reported to work in continuous high-temperature conditions.

The small size and high performance of the Stereax P180 solid-state battery make it suitable for applications in autonomous sensor devices in the Internet of Things (IoT). One of the benefits of the small size, according to Ilika, is that the battery allows each sensor to be powered locally and it can be co-loacated with an MCU. It also allows constant monitoring.

Specifically, its performance at high temperatures (up to +150°C), make it suited to power end nodes near hot machinery or engines and exhausts in cars.

At low temperature, such end nodes may be deployed to monitor infrastructure including pipelines or bridges. For automotive applications, the Stereax P180 may store energy and combine with supercapacitors to power devices in cold mornings.

The latest results showed that when the battery was repeatedly heated and cooled between room temperature (25°C) and 140°C, the battery maintained its discharge capacity of at least 180µAh and functioned normally.

“The continuous development of Ilika’s solid-state battery technology and the specification upgrade demonstrated today will enable a larger range of industrial applications to be powered by solid-state batteries, enabling more efficient monitoring of high-value equipment in the semiconductor industry for example,” added Ilika’s CEO Graeme Purdy.

Ilika plc
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