Group14 Technologies, a U.S.-based battery materials company backed by Porsche, has announced that its silicon-rich anode material SCC55 is enabling battery manufacturers to consistently exceed 1,500 charge cycles — with some tests reaching over 3,000. The company collected performance data from more than 20 customers globally using the material across electric mobility and energy storage systems.
“The data is clear: silicon batteries have crossed a critical threshold, and 1,500 cycles is the new 1,000,” said Rick Luebbe, CEO and co-founder of Group14 Technologies. “This performance benchmark for silicon batteries presents a new era of durability combined with higher energy density and faster charging for all types of rechargeable energy storage.”
SCC55 is designed to overcome the historical limitations of silicon-dominant chemistries, which often faced reduced cycle life despite offering higher energy density and faster charging potential. According to Group14, this development redefines expectations for cycle durability in lithium-ion batteries and could significantly reduce the total cost of ownership for sectors reliant on battery technology — including electric vehicles (EVs), electric aviation, and high-demand data center storage.
The company began shipping SCC55 from its South Korean facility in Sangju in late 2024. Operated jointly with SK Materials, the plant currently has an annual production capacity of 2,000 tonnes — sufficient to supply batteries for between 100,000 and 250,000 EVs. Early trial quantities have been used by customers in battery development for a range of commercial and consumer applications.
Group14’s partners include BASF, with whom it recently unveiled a market-ready silicon anode formulation combining SCC55 and BASF’s Licity binder, as well as automaker Porsche and the now-insolvent German battery cell firm CustomCells.
The company says SCC55 is compatible with a variety of cathode chemistries, including LFP, LMFP, and high-nickel formats, and is already powering millions of devices globally.