Carbon nanofiber-based electrical heating films incorporating carbon powder

Electrospinning was employed to fabricate composite electrothermal films using carbon powder (CP)/carbon nanofiber (CNF). The study focused on investigating the effect of the CP content and carbonization temperature the electrothermal properties of these films. The results revealed a direct correlation between these parameters and the conductivity of the CP/CNF composite electrothermal films, ranging from 0.006 to 9.31 S/cm. Notably, the electrothermal performance of the composite electrothermal films exhibited positive linear relationships with CP content, carbonization temperature, and external voltage. By manipulating these factors, the temperature of the heat conduction surface was effectively controlled within the range of 30.22 to 236.96 °C. Impressively, the composite electrothermal film demonstrated remarkable stability, sustaining 50 electrothermal cycles without any performance. The controllable radiation heat transfer ranged from 0.29 to 1.68. The composite electrothermal films displayed a high heat transfer efficiency of 85.4 % demonstrating its ability to melt 1 cm³ of ice in just 3 min. These findings underscore the vast potential applications of the composite electrothermal film, emphasizing its efficiency and adaptability for various uses.