Flexible solar thermoelectric nano composite film and preparation method thereof

The invention discloses a flexible solar thermoelectric nano composite film and a preparation method thereof, and the method comprises the steps: placing a PEDOT: PSS aqueous solution in a beaker, adding ethanol to form a mixed solution, carrying out ultrasonic treatment, and carrying out vacuum filtration to obtain a PEDOT: PSS film; the preparation method comprises the following steps: adding Ti3AlC2 powder into an ionic solution containing hydrochloric acid and lithium fluoride at room temperature, carrying out an etching reaction, purifying after the reaction, carrying out ultrasonic treatment, centrifugation and filtration under argon protection to obtain a Ti3C2Tx solution, and carrying out vacuum filtration to prepare an MXene membrane; and covering the PEDOT: PSS film with the MXene film to form a semi-vertical structure, and drying the semi-vertical structure. According to the nano-composite film, an interface area is formed between materials through a semi-vertical structure, the energy conversion e