"Four Times the Storage of Graphite"... POSCO Future M Secures Silicon Anode Material Technology

Simultaneous Achievement of Charge-Discharge Lifespan and Energy Density

Application of Proprietary Nanotechnology and Carbon Compounding

Validation Completed by Global Customers

POSCO Future M has succeeded in securing mass production technology for silicon anode materials, which are recognized as a core material for next-generation batteries. The company plans to begin mass supply in 2028, taking into account market conditions and customer demand.

Panoramic view of POSCO Future M's silicon anode material demo plant located in Pohang City. POSCO Future M

On May 20, POSCO Future M announced that its self-developed silicon anode material has achieved more than four times the energy storage performance compared to conventional graphite-based anode materials.

Silicon anode materials are attracting attention as next-generation electric vehicle (EV) battery materials because of their high energy density and fast charging speed. However, commercialization has been challenging due to the expansion of volume during charge and discharge cycles.

POSCO Future M explained that it has alleviated the expansion issue by applying its proprietary silicon nanotechnology and carbon compounding technology.

Silicon anode materials are generally used in combination with graphite-based anode materials. POSCO Future M stated that, even in tests where the mixing ratio of silicon anode material was raised to over 20%, more than 80% of the initial capacity was retained after 1,000 charge-discharge cycles.

Given that the mixing ratio of silicon anode material in existing batteries has remained in the single digits, this demonstrates that both high capacity and long lifespan performance have been achieved simultaneously.

POSCO Future M has completed securing mass production technology through product testing and quality verification with domestic and international customers. The company aims to strengthen its competitiveness in supplying silicon anode materials by further advancing process technology and improving productivity.

Hong Youngjun, Head of the Technology Research Center, stated, "Silicon anode material is a next-generation core material that will determine future battery performance competitiveness. Based on our accumulated material technology and mass production experience, we will continue to expand our global market competitiveness."

This content was produced with the assistance of AI translation services.