Silver nanowire assembly and preparation method and flexible conductor thereof

The invention provides a preparation method of a silver nanowire assembly. The method includes the steps that a polyvinylpyrrolidone solution and a silver salt solution are made to react to obtain the silver nanowire assembly; and solvent in the polyvinylpyrrolidone solution contains ethanediol and glycerine, and the reaction temperature is 100-300 DEG C. By means of the preparation method, the three-dimensional assembling process from silver ions to silver nanowires is directly realized through a one-step method; the preparation method is simple in technology and good in reproducibility, and the silver nanowire assembly can be conveniently, rapidly and massively prepared through the method; besides, the silver nanowire assembly prepared through the method is good in electrical and mechanical properties. The invention further provides the silver nanowire assembly and a flexible conductor based on the silver nanowire assembly.