3D graphene boost for sulfur batteries

3D graphene boost for sulfur batteries

Technology News |
By Nick Flaherty

Lyten in California has launched a lithium-sulfur (Li-S) battery that it claims will have three times the energy density of lithium ion or solid state batteries

The LytCell EV battery platform is based around a 3D graphene material that has the potential to reach and energy density of 900 Wh/kg.

The company has been in stealth mode, working closely with the US Government for several years on defence-related vehicle applications.

Lyten’s Sulfur Caging technology used in LytCell batteries stops the ‘poly-sulfide shuttle’, a cycle-life compromising factor that has up to now prevented practical Li-S use in battery electric vehicles.  Under DOD test protocols, a LytCell prototype design has demonstrated greater than 1,400 cycles.

“We have begun a generational transformation from internal combustion engines to BEV’s. We’re confident that Lyten’s breakthrough battery platform will accelerate the mass consumer adoption of electric vehicle ownership due to the performance, range, and safety improvements of our LytCell EV™ batteries,” said Dan Cook, CEO and a Co-Founder of Lyten. “By also delivering the most environmentally responsible battery with a USMCA-compliant supply chain, we believe Lyten will enable automakers to more confidently execute their announced electrification roadmaps.”

The 3D Graphene material platform can be tuned at the molecular level to specific battery application requirements to improve energy density, provide better temperature performance and enable faster charging in 20 minutes with improved safety. Unlike lithium ion battery packs, it can operate from -30°C to +60°C, reducing the system cost.

Lyten says its battery platform is below the cost of an internal combustion engine (ICE) and can operate cost parity and can be produced in cylindrical, pouch, and prismatic formats. It also points to manufacturing in the US to avoid reliance on Chinese suppliers.

“Lyten battery technology will offer an enormous leap forward for the automotive industry at a pivotal time when it is aiming to rapidly reinvent the future of electrified mobility,” said Greg Deveson, President of Automotive at Lyten. “We see our LytCell EV™ batteries as a key enabler to improve EV performance and affordability.”

Lyten expects full production and market availability for ‘25-‘26 vehicles.

Lyten is also aiming LytCell battery technology at commercial vehicles, electric flight, commercial aerospace, and other applications. Lyten 3D Graphene technology has also been embedded in advanced sensors in addition to thermoplastic composites to reduce the weight of vehicles.

This follows the bankruptcy of UK lithium sulfur pioneer Oxis Energy earlier this year.

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