UK battery material developer granted Chinese patent

UK battery material developer granted Chinese patent

Business news |
By Nick Flaherty


The company patent was filed jointly with Toyota Motor in 2011 and is part of Ilika’s proprietary vapour deposition processes used in producing solid-state batteries directly from the elements. This allows a scalable stacked cell architecture which enables the simple fabrication of cells over a wide range of sizes.

The patent has already been granted in the UK, Europe and US and is one of two early filings – the second patent covers both jointly-owned and solely owned IP.

In April Ilika announced the launch of its first solid-state battery IP product, the Stereax M250, designed for powering wireless sensors in the Internet of Things. The IP provides a smaller footprint, faster charging, longer life span, low leakage and reduced flammability.

The Stereax roadmap focuses on three main battery requirements: miniaturisation, capacity in a small footprint and increased performance. The miniaturisation roadmap looks at increasingly smaller footprints at smaller currents (µAh) for small sensor driven devices, while the capacity roadmap increases the amount of energy for a given active footprint with multiple cells stacked on top of one another. The performance roadmap focuses on higher energy density solutions that have additional requirements such as extended temperature range support.

The Stereax M250 is the first battery which is available for licensing and uses the patented materials and processes to get up to 40% improvement on current solid state solutions and increased temperature range support to over 100°C, 30°C higher than existing solid state products.

“The grant of this patent further demonstrates the global strength of Ilika’s growing IP portfolio in solid-state batteries,” said Graeme Purdy, CEO of Ilika. “IoT devices are developing at a rapid rate around the world and Ilika recognizes the importance of protecting IP in all of the key markets, including China.”


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