The invention relates to flake silver
powder as well as a preparation method and application thereof.The preparation method comprises the following steps that S1, a silver source is dissolved in deionized water to prepare a solution containing silver ions, a
reducing agent is dissolved in the deionized water to obtain a
reducing agent solution, and the concentration range of the silver ions in thesolution containing the silver ions is 0.22 mol / L; S2, a pH regulating solution is prepared, the pH regulating solution is added into the solution containing the silver ions, and the pH value of thesolution is regulated to 8-12; S3, a dispersing agent is added into the solution containing the silver ions, and uniform stirring is carried out; S4, at the temperature of 20-60 DEG C, the solution containing the silver ions and the
reducing agent solution are fully mixed and reduced in the stirring process to obtain
silver particles, part of the reducing agent solution is added into part of the solution containing the silver ions in the mixing process, and after full reduction stirring, the remaining reducing agent solution and the solution containing the silver ions are added into a
system at the same time; and continuous stirring and reduction are carried out until the reaction is finished,
solid-liquid separation is carried out on the reaction liquid, washing and
drying are carried outto obtain the flake silver
powder. According to the preparation method, the particle size and the sheet
diameter of the prepared silver
powder are regulated and controlled, operation is easy, and different use requirements can be met.