Why aluminum foil of lithium-ion battery will be corroded?
When the normal charge, the equivalent cell capacitance, aluminum as a cathode, an external circuit to give electronic, it will not work with aluminum electrolyte reaction (ie, aluminum loses electrons). And when the anti-charging capacitor equivalent to the original battery, the equivalent of two At the same time the power is short-circuited capacitor at this time also as a power source, the aluminum as the anode, the reaction with the electrolyte, lose electrons, so that the electrolyte is "corrosion" of the
In general, between 0 ~ 5V battery charging and discharging of the aluminum current collector is not affected and will not have a corrosive effect on aluminum foil. But the voltage is too high, then aluminum foil corrosion may occur, but this is not very realistic, now more than lithium batteries can not go to 5V, the electrolyte can not stand ah!
The main lithium foil from the corrosive effect of the electrolyte decomposition HF corrosive effect on aluminum foil, in particular the water battery when there is no control in place, aluminum foil corrosion is more serious.
AL foil can not be used as a negative, LiAl alloy occurs at a low level. Aluminum products coated with a layer of dense and hard oxide film, which will prevent further oxidation of aluminum products, iron products and green rust is loose, oxygen and water vapor will go in its reaction, although aluminum active than iron, but the aluminum more resistant to corrosion than iron.
