Low-pressure corrosion foil as well as preparation method and application thereof

The invention discloses a low-pressure corrosion foil as well as a preparation method and application thereof. The preparation method comprises the steps of pretreatment, near-field direct writing, hole distribution corrosion, intermediate treatment, deep growth corrosion, post-treatment and heat treatment, and the specific operation of the near-field direct writing step is as follows: a molten water-insoluble polymer is subjected to symmetrical direct writing treatment on two sides of an aluminum foil to obtain a plane pattern formed by a plurality of parallel or crossed lines; the distance between the pattern lines is 20 to 200 microns, and the width of the pattern lines is 0.5 to 1000 microns. The prepared low-voltage corrosion foil is provided with the sandwich aluminum layer of a continuous penetrating structure, the bending performance is remarkably improved while the low-voltage corrosion foil has the high specific volume, the bending strength reaches 85 to 99 times, meanwhile, the effective contact ar