Why use aluminum foil for the positive electrode of lithium battery?


With the rapid development of lithium batteries in recent years, lithium batteries have received widespread attention in our lives. Whether lithium batteries are used in digital products or electric cars, we want high energy density and light weight of the battery, so it is very critical in selecting materials. If you look closely, you will find that the negative electrode of the lithium battery is copper foil, and the material used for the positive electrode is aluminum foil.

Why use aluminum foil for the positive electrode of lithium battery? First, the battery needs a good conductive material. Among ordinary materials, Aluminum Foil is conductive and cheap. Second, the positive electrode potential of the battery is high, the copper foil is easily oxidized, and the oxidation potential of aluminum is high, and the surface layer of the aluminum foil has a dense oxide film, which also has a good protection effect on the aluminum inside. Third, aluminum foil is relatively stable in air. As the materials of aluminum batteries, their quality requirements are very high. Different thickness, purity, and degree of roughness will have an important impact on the performance of lithium batteries.

The aluminum foil used to make lithium batteries is 8021 O aluminum foil, and its thickness ranges from 0.04mm to 0.045mm. HTMM is a manufacturer of raw materials for battery aluminum foil. The aluminum foil produced is widely used in industry, meets the technical requirements of related products, meets customer standards, and is well received by customers. Friends are welcome to come to consult!

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