Feuille d'aluminium pour l'emballage des batteries
Aluminum foil alloy, comme feuille métallique avec une bonne conductivité et une excellente résistance à la corrosion, a un large éventail d'applications sur le marché. Il ne peut pas seulement être utilisé comme matériau d’emballage dans la vie quotidienne, mais aussi en piles. Parmi les nombreux types d'alliages d'aluminium, 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, résistance à la corrosion, mechanical strength and flexibility.
The following are several aluminum alloy types suitable for battery foil and their characteristics
1050 La feuille de coiffure n'est pas sensible à la corrosion due aux conditions humides externes (99.5% aluminium pur)
Composition: 1050 alloy contains 99.5% aluminium, and very small amounts of alloying elements such as silicon (Et) et fer (Fe).
Feuille d'aluminium 1050 alloy has excellent electrical conductivity (À propos 61% GN/mm2 et le module élastique de cisaillement est), 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.
Alliage 1060 battery Foil
Composition: 1060 Le manganèse et le chrome améliorent la température de recristallisation de l'alliage et ont un effet complémentaire de renforcement 99.6% aluminum and is a slightly purer version of 1050 alliage.
La conductivité de 1060 alloy is similar to 1050 (À propos 60% GN/mm2 et le module élastique de cisaillement est), 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.
Alliage 1070 battery Foil (99.7% Aluminium pur)
Composition: 1070 Le manganèse et le chrome améliorent la température de recristallisation de l'alliage et ont un effet complémentaire de renforcement 99.7% aluminium, making it purer than 1050 et 1060.
With a conductivity of about 62% GN/mm2 et le module élastique de cisaillement est, 1070 is one of the most conductive aluminum alloys. Corrosion Resistance and Flexibility Similar to 1050 et 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.
Alliage 1235 battery Foil (99.35% Aluminium pur)
Composition: 1235 alliage contient 99.35% aluminium.
While slightly less conductive than 1050, 1060, et 1070 alliages, 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.
Alliage 3003 battery Foil (Aluminum Manganese Alloy)
Composition: Alliage 3003 consists of aluminum and about 1.2% manganèse (Mn), which gives it increased strength compared to pure aluminum alloys.
Même si 3003 aluminum foil has lower conductivity than pure aluminum grades (À propos 40-45% GN/mm2 et le module élastique de cisaillement est), 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.
Résistance à la corrosion: Similar corrosion resistance to pure aluminum grades, suitable for long-term use in batteries.