Dispersion method of silicon nanowires, prepared silicon nanowire dispersion liquid and application of silicon nanowire dispersion liquid

The invention provides a dispersion method of silicon nanowires, a prepared silicon nanowire dispersion liquid and application of the silicon nanowire dispersion liquid, and the dispersion method comprises the following steps: performing primary physical dispersion on slurry containing the silicon nanowires to realize pre-dispersion; then adding a carboxylic acid type anionic surfactant for at least two times, and matching and performing corresponding physical dispersion after the surfactant is added each time, so as to obtain the silicon nanowire dispersion liquid. According to the dispersion method, physical dispersion and chemical dispersion are combined, the dispersion uniformity and dispersion stability of the silicon nanowires can be effectively improved, the silicon nanowires can be scattered and combed through pre-dispersion, the carboxylic acid type anionic surfactant can be effectively combined with Si-OH on the surface of a silicon nanowire material, and then a protection layer of an O/W emulsion s