Importance

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Abstract

The present disclosure is related to the field of energy storage devices, and particularly a lithium-ion battery flexible packaging material and a lithium-ion battery using the same. The flexible packaging material comprises a substrate layer, a first bonding layer, a metal foil layer, an anti-corrosion treatment layer, a second bonding layer and a sealing layer arranged in sequence from the outside to the inside, wherein the anti-corrosion treatment layer is composed of at least one of a nickel layer, a nickel alloy layer, a copper layer and a copper alloy layer, and is plated on the metal foil layer. The lithium ion battery comprises a naked cell, an electrolyte and a packaging bag, wherein the packaging bag packages the naked cell and the electrolyte and is made of the lithium-ion battery flexible packing material. In the present disclosure, through applying the flexible packaging material plated with the anti-corrosion treatment layer to the lithium-ion battery, the resistance to hydrofluoric acid is apparently improved, the lithium alloy is hardly formed, and no lithium precipitation occurs even if a short-circuit occurs to the anode and packaging material, so the lithium-ion battery is capable of better resisting electrochemical corrosion, strengthening the safety and prolonging the service life of the lithium-ion battery.

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First Claim