Aluminum Foil For Battery Packaging
Aluminum foil alloy, as a metal foil with good conductivity and excellent corrosion resistance, has a wide range of applications in the market. It can not only be used as a packaging material in daily life, but also in batteries. Among the many aluminum alloy types, which alloy is a suitable battery foil packaging material?
Aluminum foil is often used as a current collector in the cathode in lithium-ion batteries. Whether an aluminum alloy is suitable for battery foil depends on its conductivity, 耐食性, mechanical strength and flexibility.
The following are several aluminum alloy types suitable for battery foil and their characteristics
1050 battery foil (99.5% 純アルミニウム)
構成: 1050 alloy contains 99.5% アルミニウム, and very small amounts of alloying elements such as silicon (そして) そして鉄 (鉄).
アルミホイル 1050 alloy has excellent electrical conductivity (について 61% IACS), making it suitable for batteries where efficient current collection is crucial. It has excellent corrosion resistance, which is critical to protect the foil from degradation during the battery life. High thermal conductivity is very important for managing heat in battery systems. Pure aluminum (1050) has relatively low strength, but is often strong enough for use as battery foil due to its flexibility.
合金 1060 battery Foil
構成: 1060 合金は 99.6% aluminum and is a slightly purer version of 1050 合金.
The conductivity of 1060 alloy is similar to 1050 (について 60% IACS), which makes it well suited for current collector applications. High ductility makes it easy to process into thin foils, which is ideal for continuous rolling processes in battery manufacturing.
合金 1070 battery Foil (99.7% 純アルミニウム)
構成: 1070 合金は 99.7% アルミニウム, making it purer than 1050 そして 1060.
With a conductivity of about 62% IACS, 1070 is one of the most conductive aluminum alloys. Corrosion Resistance and Flexibility Similar to 1050 そして 1060, it has excellent corrosion resistance and flexibility, which is important for foil applications in batteries.
1070 alloy is popular in high-performance lithium-ion batteries where maximum conductivity and minimum resistance are critical.
合金 1235 battery Foil (99.35% 純アルミニウム)
構成: 1235 合金 contains 99.35% アルミニウム.
While slightly less conductive than 1050, 1060, そして 1070 合金, 1235 aluminum foil still provides adequate conductivity for many battery applications. It has excellent corrosion resistance. 1235 is often used in applications where cost considerations are important and slightly lower conductivity can be tolerated. For less demanding applications or where cost reduction is a priority, 1235 alloy is a cost-effective choice.
合金 3003 battery Foil (Aluminum Manganese Alloy)
構成: 合金 3003 consists of aluminum and about 1.2% マンガン (ん), which gives it increased strength compared to pure aluminum alloys.
それでも 3003 aluminum foil has lower conductivity than pure aluminum grades (について 40-45% IACS), it is still acceptable for some battery applications. The addition of manganese increases mechanical strength, which is useful in certain battery configurations where the foil is subjected to mechanical stress.
耐食性: Similar corrosion resistance to pure aluminum grades, suitable for long-term use in batteries.