The Reason for Using Aluminum Foil as the Positive Electrode of Lithium Batteries

The main reason for using aluminum foil as the positive electrode for lithium batteries is that aluminum foil has the following excellent characteristics:

1. Good conductivity: Aluminum foil has high conductivity, which can effectively transfer current, reduce battery internal resistance, and improve battery performance.

2. High reactivity: The surface of aluminum foil has high chemical reactivity, which can fully react with the positive electrode material, improving the discharge efficiency and capacity of lithium batteries.

3. Good formability: Aluminum foil has good plasticity and formability, which can be combined with lithium battery production technology for various shapes of processing and is not easy to break.

4. Good corrosion resistance: The surface of aluminum foil can be oxidized or treated to improve its corrosion resistance, making it resistant to the electrolyte in lithium batteries and less susceptible to corrosion.

In summary, aluminum foil has excellent conductivity, reactivity, formability, and corrosion resistance, making it widely used in the preparation of positive electrode materials for lithium batteries. At the same time, aluminum foil can also reduce the manufacturing cost of lithium batteries and improve their competitiveness in various application fields.