Aluminum foil serving as the current collector for cathode electrodes. When aluminum contacts the electrolyte at high voltage it forms a protective oxide/fluoride layer on its surface; this passivation is the primary reason aluminum is used rather than copper on the cathode side. Offered in three thickness options.

Key Features

Forms a passivation layer at high voltage, making it suitable for the cathode side
Three thickness options: 10 / 12 / 16 um
Tensile strength of 170-210 MPa, durable through coating and calendering processes