- Group14 raised $463M in Series D funding led by SK, with Porsche, Microsoft, and others investing.
- Its silicon anode tech boosts battery energy density by up to 50% and enables rapid, sub-10-minute charging.
- The funds will expand Group14’s global production as automakers race for next-gen EV performance.
Battery materials innovator Group14 announced Wednesday it has secured $463 million in new funding to ramp up manufacturing of advanced silicon anodes for lithium-ion batteries—a key leap for electric vehicle (EV) performance.
The Series D round was led by battery giant SK, with participation from ATL, Lightrock, Microsoft, Porsche, and OMERS, signalling sustained investor confidence in future EV growth.
Group14’s silicon anode technology enables EV batteries to store up to 50% more energy and charge in under 10 minutes.
While pure silicon can massively increase energy density compared to conventional graphite, its tendency to expand and contract during cycles has hampered real-world use.
The startup’s breakthrough: a scaffolded structure that keeps silicon stable, solving expansion issues without sacrificing durability. The material can either blend with graphite or fully replace it for maximum capacity.
With three factories—two in the U.S. and one in South Korea—Group14 now also fully owns its South Korea joint venture site BAM 3, after buying out partner SK’s stake alongside its fundraising.
The company plans to use the new capital to further scale up production, helping automakers build more capable, longer-ranged, and faster-charging EVs.
Despite reports of slowing EV sales growth, the global lithium-ion battery market is set to expand rapidly in the coming decade, and investors remain committed to technologies that make EVs more efficient and affordable.
Edited by Annette George
