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Battery-Grade Aluminum Foil: Introduction and Market Demand Analysis
2026-05-26
Battery-grade aluminum foil is a high-purity aluminum material with a purity of over 99.6%, functioning as the core cathode current collector for lithium-ion and sodium-ion batteries. Manufactured with a thickness ranging from 6 to 12 micrometers, it boasts excellent electrical conductivity, lightweight properties and outstanding corrosion resistance, effectively collecting and conducting current during battery charging and discharging processes. Advanced carbon coating surface treatment further optimizes interfacial adhesion and reduces contact resistance, significantly improving battery stability and cycle life.
Driven by the global energy transition, the battery aluminum foil market witnesses rapid expansion. In 2024, global sales volume reached 583,000 tons, with a market scale of USD 3.31 billion. Supported by booming new energy industries, the market is expected to grow at a CAGR of 10.2%, reaching USD 5.92 billion by 2030. Electric vehicles serve as the largest demand source, accounting for 58% of total consumption, while energy storage systems contribute 21%. The fast commercialization of sodium-ion batteries further fuels market growth, as their aluminum foil consumption per GWh is 2 to 3 times that of lithium-ion batteries.
High production precision and yield requirements form strict technical barriers, making Chinese leading manufacturers the core global suppliers. The industry is currently trending toward ultra-thin, high-strength and carbon-coated aluminum foil to adapt to high-energy-density battery upgrading demands.