Micro-nanofiber membrane as well as preparation method and application thereof

The invention provides a micro-nanofiber membrane as well as a preparation method and application thereof. The micro-nanofiber membrane is formed by interweaving submicron fibers and nano fibers, the submicron fibers and the nano fibers are polyamide 6 fibers, and a water-based fluorine-containing material and an inorganic conductive agent are distributed in the micro-nanofiber membrane. The sectional area of the thick micro-nano fibers can be increased due to the increase of the diameter, so that the capacity of bearing external force is increased, and the effect of enhancing the mechanical property is achieved. The microporous structure generated by the fine nanofibers can effectively prevent liquid water from permeating, and the micropores are small enough and can allow water vapor to pass through, so that good air permeability and moisture permeability are ensured. Therefore, the micro-nano fiber membrane has a micro-nano structure, heat and humidity balance can be promoted, the fiber membrane is endowed