▎ 摘　　要

NOVELTY - A non-layered molybdenum nanosheet/graphene-based heating film comprises transparent insulating layer (L1), an electrode, a transparent insulating layer (L2), and a non-layered molybdenum nanosheet/graphene-based fiber film. The transparent insulating layer (L1) covers one side of the non-layered molybdenum nanosheet/graphene-based fiber film. The transparent insulating layer (L2) covers the other side of the non-layered molybdenum nanosheet/graphene-based fiber film. One end of the electrode is electrically connected to the non-layered molybdenum nanosheet/graphene-based fiber film, and the other end of the electrode extends outside the transparent insulating layer (L1) or the transparent insulating layer (L2). The non-layered molybdenum nanosheet/graphene-based heating film is prepared by e.g. preparing pre-peeling dispersion of molybdenum powder, preparing mixture of molybdenum powder and graphene oxide and preparing non-layered molybdenum nanosheet/graphene oxide dispersion. USE - Non-layered molybdenum nanosheet/graphene-based heating film. ADVANTAGE - The non-layered molybdenum nanosheet/graphene-based heating film has excellent photo-thermal conversion efficiency, electric heating conversion efficiency and photo-thermal diversification heat generating function. DETAILED DESCRIPTION - A non-layered molybdenum nanosheet/graphene-based heating film comprises transparent insulating layer (L1), an electrode, a transparent insulating layer (L2), and a non-layered molybdenum nanosheet/graphene-based fiber film. The transparent insulating layer (L1) covers one side of the non-layered molybdenum nanosheet/graphene-based fiber film. The transparent insulating layer (L2) covers the other side of the non-layered molybdenum nanosheet/graphene-based fiber film. One end of the electrode is electrically connected to the non-layered molybdenum nanosheet/graphene-based fiber film, and the other end of the electrode extends outside the transparent insulating layer (L1) or the transparent insulating layer (L2). The non-layered molybdenum nanosheet/graphene-based heating film is obtained by (i) preparing the pre-peeling dispersion of molybdenum powder by providing molybdenum powder and adding it to the pre-peeling dispersion liquid, and subjecting the pre-peeling dispersion liquid with molybdenum powder to the stage (A), ultrasonically processing in a water bath at 5-15 degrees C, and collecting the supernatant liquid by centrifugation, (ii) preparing a mixture of molybdenum powder and graphene oxide by adding graphene oxide to the pre-peeling dispersion of molybdenum powder, and ultrasonically processing in water bath at 5-15 degrees C, centrifuging and collecting the bottom layer mixture after ultrasonically processing , and dispersing the bottom layer mixture in water, washing and drying, (iii) preparing non-layered molybdenum nanosheet/graphene oxide dispersion by dispersing the mixture of molybdenum powder and graphene oxide in N-methylpyrrolidone to prepare a mixed solution, and using a pulse probe to ultrasonically processing the mixed solution, in which the ultrasonic temperature of the pulse probe is 5-15 degrees C, and after the ultrasonically processing is finished, and concentrating mixed solution, (iv) spinning by adding carbon black to the non-layered molybdenum nanosheet/graphene oxide dispersion, stirring and performing three-stage ultrasonic water bath in which the temperature of the three-stage water bath is 5-15 degrees C, after the ultrasonically processing is completed, adding polyimide powder to the mixed system and transferring to an oil bath at 103-110 degrees C, stirring and mixing uniformly as spinning dope, electrospinning and collecting using a spinning needle with a larger inner diameter along the yarn exiting direction to prepare a non-layered molybdenum nanosheet/graphene oxide hybrid porous fiber membrane, and post-processing by washing non-layered molybdenum nanosheet/graphene oxide hybrid porous fiber membrane, drying and reducing. The mass of the graphene oxide is 0.5-5 times the mass of the molybdenum powder in the pre-peeling dispersion liquid of molybdenum powder. The content of polyimide in the spinning dope is 8-12 %mass. The pre-peeling dispersion is isopropanol and/or deionized water.