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Material Application: lithium ion battery
Product: 1235 aluminum foil
Project Details:
Aluminum foil for lithium ion battery is usually used in lithium-ion battery collector. Under normal circumstances, lithium-ion battery manufacturers will use mostly the rolling aluminum foil as a positive current collector. Thickness of aluminum foil for lithium ion battery is 10 to 50 microns. Commonly using lithium-ion battery aluminum foil is 1 series and 3 series. Alloy grades include 1060 aluminum foil,1050 foil,1235 foil and 3003 aluminum foil, alloy state is mainly O state And H state.
Why lithium-ion battery use aluminum foil to do the battery cathode rather than copper foil? Both copper foil and aluminum foil can be used as a collector, if the aluminum foil to do the negative, because of the chemical properties of aluminum is more lively, the battery discharge will give priority to consumption of aluminum foil , which will damage the battery, reducing battery life. while using the aluminum foil as a battery cathode can protect the lithium battery.
A recent research of lithium-ion battery industry has found that if we etch and roughen the surface of an aluminum foil used as a positive electrode current collector for a lithium ion rechargeable cell can improve the charge and discharge characteristics of the battery. Compared with the aluminum foil without surface roughening treatment, if aluminum foil does the surface roughening treatment, the charge and discharge characteristics of the battery will be improved largely. So aluminum foil for lithium-ion battery has an important role in rechargeable batteries of hybrid cars and electric vehicles, and other fields.
Aluminum foil has thermal conductivity, electrical conductivity and a certain degree of mechanical strength. Aluminum foil annual production capacity is 220,000 tons. The aluminum foil for lithium-ion battery produced by it use high-precision imported rolling mill with online plate roller and Siemens control system. It has the feature of surface color uniform, clean, plate formation, no obvious roll, no pitting, no pinholes, no corrosion traces, which has been well received by the major manufacturers in the lithium-ion battery manufacturing industry.
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