DI Dongil Invests 110 Billion Won to Build LFP Battery Foil Facility in Korea

DI Dongil Is Investing 110 Billion Won To Establish An LFP Battery Foil Facility In Korea

DI Dongil announced a 110 billion won investment to aggressively enter the next-generation secondary battery materials market. The investment will be used to establish production facilities at its Cheongju aluminum plant, which is scheduled for completion this year, specifically for manufacturing carbon-coated aluminum foil for lithium iron phosphate (LFP) batteries.

Market Position

The Cheongju facility currently supplies critical aluminum foil to major South Korean battery manufacturers, including LG Energy Solution, Samsung SDI, and SK On. A phased investment plan will run from February 2026 through 2030, with an initial outlay of 20 billion won scheduled for this year. Covering land, construction, and machinery, this investment represents 19.6% of the consolidated equity capital as of year-end 2024. This move aligns with a broader push by Korean battery material suppliers to support the localized production of LFP batteries by companies like SK On.

According to Towards Chem&Materials, the carbon coated aluminum foil market size accounted for USD 2.85 billion in 2025 and is predicted to increase from USD 3.18 billion in 2026 to approximately USD 8.5 billion by 2035, expanding at a CAGR of 11.55% from 2026 to 2035 as product demand from lithium-ion batteries and energy storage applications is increasing.

With its advanced German Achenbach rolling mills and process technology, the Cheongju plant is set to become a primary hub for a steady supply of high-quality aluminum foil.

Electric Vehicle (EV) & Battery Demand Accelerate the Carbon Coated Aluminum Foil Market

• The ongoing growth of EV production needs cutting-edge materials to improve battery performance, like better cycle life and thermal stability.
• Surge in investment in renewable energy generation needs large-scale storage, fuelling demand for high-grade current collectors.
• The growing demand for portable consumer electronics further fuels the demand for reliable battery materials.
• Government incentives for carbon emission reductions and clean energy technology in emerging economies are driving market expansion further.