Multifunctional Flexible Composite Membrane Based on Cnf-Modified Expanded Graphite/Electrostatically Spun Fiber Network Structure for Solar Thermal Energy Conversion

Abstract

To enhance the application range of flexible films, it is crucial to rationally design composite films with high stretchability, excellent thermal conductivity, and water resistance. CNF-modified expanded graphite-filled flexible composite films were obtained by electrospinning method. The prepared materials were characterized by good tensile properties (328.32%), high latent heat (107.0 J/g), good thermal stability, high photo-thermal conversion efficiency, good reusability, flame retardant properties, UV resistance and visible light absorption properties. What's more, the performance of the flexible composite membrane is adjustable. The prepared flexible composite membranes are promising in the fields of energy conversion, wearable flexible materials and renewable energy utilization.

Keywords: modified expanded graphite, composite films, Energy conversion