Metal foils are used in batteries as current collectors because they have good electrical conductivity and a large surface area for electrochemical reactions. Aluminum foil is typically used for the positive electrode (cathode) and copper foil for the negative electrode (anode) because of their different electrochemical stability at the specific voltages of each electrode.
Metal foil materials
Copper foil, aluminum foil, stainless steel foil, nickel foil, titanium foil
Specifications
Thickness: 15um-200um
Width: 100 mm-600mm
Length: 30-300m
Features
Non-oxidation, even color and luster, no pits, lifting edge and undulation, smooth slicing
Excellent flatness and tight tolerances
Flexible product dimensions
Excellent weldability
High strength and elongation
Thermally and electrochemically stable
Applications
lithium-ion batteries
electric double-layer capacitors
Battery Cathode Substrate
Sodium ion battery
lithium battery
Polymer battery
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