Key View: Supply-demand mismatch drives processing fee recovery, while technological barriers strengthen profit resilience.
On April 1, data from Changjiang Nonferrous Metals showed a broad surge in lithium battery copper foil prices. Prices for 4.5μm foil rose to RMB 126,500/mt (+1,500/mt), 6μm to RMB 115,350/mt (+1,300/mt), and 8μm to RMB 114,100/mt (+1,300/mt). This price movement reflects not merely cost pass-through, but a clear inflection point driven by improving supply-demand dynamics and technological upgrading, signaling simultaneous growth in both volume and profitability.
Supported by steady expansion in power battery and energy storage demand, alongside rising consumption of PCB copper foil driven by AI computing infrastructure, the copper foil industry is transitioning from a capacity expansion phase to a profitability recovery cycle. Companies with advanced production capabilities and strong technological reserves are poised to enter a new growth phase.
1. Supply-Demand Dynamics Behind Price Gains
As a capital-intensive industry, copper foil capacity expansion has been constrained by high copper prices and cash flow pressures in recent years. Since 2024, however, global installations of power and energy storage batteries have maintained double-digit growth, significantly boosting demand for copper foil. Industry forecasts suggest global lithium battery copper foil demand will reach 800,000 mt by 2025, while effective capacity will be around 750,000 mt, leaving a supply gap exceeding 50,000 mt. This imbalance has driven a steady recovery in processing fees since Q4 2024, with the latest price increases reflecting improved bargaining power among producers.
2. Technology Upgrade Drives Profit Differentiation
Profit recovery is increasingly driven by premiumization and diversification. On one hand, ultra-thin 4.5μm copper foil—critical for enhancing battery energy density and reducing material costs—has become standard in high-end power batteries, commanding a 15–20% processing fee premium over 6μm products. Leading producers now derive over 30% of capacity from 4.5μm foil, with further expansion underway.
On the other hand, surging demand for AI servers and data centers is driving rapid growth in high-performance PCB copper foil. With stricter requirements on thickness uniformity and tensile strength, PCB foil production is significantly more complex and can achieve processing fees more than twice those of lithium battery foil. Some producers are reallocating capacity from lithium battery foil to PCB foil, further tightening supply and reinforcing a positive cycle of demand pressure, price increases, and margin expansion.
3. Industry Reshaping: Technology and Capacity Define Competition
The industry is shifting from scale-driven competition to technology-led competition. Advanced requirements such as ultra-thinness, high tensile strength, and low surface roughness create high entry barriers, favoring leading players with proprietary equipment and process expertise. Meanwhile, companies with dual exposure to lithium battery and PCB copper foil can flexibly allocate capacity, enhancing resilience and profitability. Industry concentration is expected to rise further, with the top five players’ market share projected to increase from 60% to over 75%.
4. Risks and Investment Outlook
Key risks include volatility in copper prices and potential oversupply from rapid capacity expansion. Investors are advised to focus on leading companies with mass production capability for 4.5μm ultra-thin foil, strong PCB foil capacity, and deep partnerships with major battery manufacturers. In the short term, copper foil prices are likely to remain on an upward trend with room for further processing fee recovery. In the long term, the dual drivers of AI and new energy support a clear growth trajectory and strong investment potential.
Source：Changjiang Nonferrous Metals Network