Battery Foil

Improved performance through development of new materials for lithium-ion batteries

UACJ Foil helps make batteries better by developing aluminum and copper foil materials and high-performance surfaces used in current collectors. These collectors are found in products such as lithium-ion batteries and electric double-layer capacitors.

Image of Battery Foil

Current collector foils

UACJ Foil’s aluminum and copper foils exhibit high strength, ductility, conductivity, heat-resistance and other advancements. We also strive to improve bendability, surface functionality (shaping, coating, etc.) and other characteristics.

Combining strength and conductivity with higher-performance aluminum foil

Advantages of pure, high-strength aluminum foil

  Alloy Mechanical Properties Conductivity (% IACS) Reference
Tensile strength (MPa) Durability (MPa) Elongation (%)
1000 series A730H 290 250 4.0 56 High strength/ ductility 1100
1C32 230 200 4.5 58 High strength/ ductility 1N30
1N30 185 165 4.5 58 Previous material
1085 180 165 5.0 60
Alloy series 3003 270 240 3.0 47 Previous material