Targray aluminium foil is a cathode material (current collector) used in lithium-ion battery manufacturing. The foils offer excellent performance and are available in a number of different standards, strengths and thicknesses.

1. Targray supplies a line of Aluminum foils for use as the cathode current collector of secondary
Li-ion batteries. These foils have excellent performance in lithium-ion cell manufacturing.
Features
• Available in standard alloys: 1N30, 1070, 3003
• High strength alloy foil available – 300 MPa or more
• Excellent performance in a range of battery applications
• Multiple thicknesses available: 15 and 20 micron
Applications
• Extensively used in consumer electronics and electric power tools
• Extensive experience in Hybrid and electric vehicle battery applications
Mechanical Properties
Alloy
Alloy Used Hardening Code
1070 H18
Aluminium Foil

2. Specifications and Allowable Variances
Thickness
(mm)
Allowable
thickness
variance (mm)
Range of
width mm
Allowable
width
variance
(mm)
Outer
diameter
(mm)
Allowable
outer dia.
variance
(%)
Inner
core
diameter
(mm)
Area
density
(g/m2)
Differences of
area density
(g)
0.012 ± 0.0006 100~1250 ± 1.0 ∅ 200 ± 10 ∅ 76.2 32.4 ± 1.6
0.015 ± 0.0008 ∅ 152.4 40.5 ± 2.0
0.02 ± 0.0010 ∅ 450 54 ± 2.7
0.03 ± 0.0015 81 ± 4.1
Alloy Composition
Alloy
Chemical composites %
Si Fe Cu Mn Mg V Zn Ti
Others
AlSingle Total
1070 0.2 0.25 0.04 0.03 0.03 0.05 0.04 0.03 0.03 99.7
Remarks: Those elements which have upper and lower limits are alloy elements, when the composition value of the element is
single, it’s the lower limit for Al; the upper limits for other elements.
Toxic elements are in the following amounts:
Pb ≤ 0.01%, Cd ≤ 0.01%, As ≤ 0.01%
Alloy Mechanical Properties
Range of thickness (mm) Hardening Code Tensile strength (σb Mpa) Elongation (δs %)
0.012~0.030 H18 ≥ 150.0 ≥ 1.0
Aluminium Foil