The invention discloses
corrosion aluminum
powder and a preparation method and application thereof, and the preparation method comprises the following steps: S1, carrying out
plasma passivation treatment on aluminum
powder to obtain
surface modified aluminum
powder with an amorphous aluminum
oxide layer; and S2, carrying out surface micro-
corrosion on the
surface modified aluminum powder, and then
drying and grading to obtain the corroded aluminum powder. The method comprises the following steps: forming an amorphous aluminum
oxide layer on the surface of aluminum powder; and then micro-
corrosion is carried out on the amorphous aluminum
oxide layer, a rich pore structure is formed on the amorphous aluminum oxide layer, and after corrosion is completed, the amorphous aluminum oxide layer can be automatically formed on the corrosion surface again. The surface of the obtained corrosion aluminum powder is completely wrapped by the amorphous aluminum oxide layer, so that the leakage current can be greatly reduced, and the electrochemical stability of the
anode foil is greatly improved; the
porous carbon has certain roughness and rich pore structures, and the specific surface area and the
specific volume are greatly increased; the micro-corrosion has no negative influence on the
mechanical strength of the aluminum powder, and ensures that no micro-crack appears on the surface of the
anode foil.