German battery developer CustomCells and Group14 Technologies, the largest global manufacturer and supplier of advanced silicon battery material, signed a multi-year supply agreement, enabling CustomCells to procure SCC55, Group14’s advanced silicon battery material.
SCC55 is a stable silicon-carbon composite anode with five times the capacity of graphite (current anode materials) and affords up to 50% more energy density than conventional graphite for lithium battery anodes, enabling lithium-silicon batteries and creating a step-change advancement for energy storage. SCC55 is manufactured by a two-step process called Scaffold Prime.
CustomCells is planning to develop a factory in the United States with a capacity of up to 2GWh, underlining its North American growth plans. This supply agreement between Group14 and CustomCells is expected to exceed US$300 million of contract value to secure a substantial supply of SCC55 beyond 2030, ensuring CustomCells’ long-term capability to meet demand for its high-performance battery cells.
Group14 and CustomCells have been working together since 2020. In this partnership, valuable insights have been gained —particularly with regard to processing in the extruder. In the future, the main aim is to strengthen technical dialogue, including with regard to future process technology and cell chemistry.
CustomCells integrates high silicon content into its 4695 cylindrical cells.
