Passive Anti-Icing and Active Deicing Films

Abstract

Anti-icing and deicing are the two major pathways for suppressing adhesion of ice on surfaces, yet materials with dual capabilities are rare. In this work, we have designed a perfluorododecylated graphene nanoribbon (FDO-GNR) film that takes advantage of both the low polarizability of perfluorinated carbons and the intrinsic conductive nature of graphene nanoribbons. The FDO-GNR films are superhydrophobic with a sheet resistance below 8 kΩ·sq(-1) and then exhibit an anti-icing property that prevents freezing of incoming ice-cold water down to -14 °C. After that point, voltage can be applied to the films to resistively heat and deice the surface. Further a lubricating liquid can be employed to create a slippery surface to improve the film's deicing performance. The FDO-GNR films can be easily switched between the superhydrophobic anti-icing mode and the slippery deicing mode by applying the lubricant. A spray-coating method makes it suitable for large-scale applications. The anti-icing and deicing properties render the FDO-GNR films with promise for use in extreme environments.

Laser‐Induced Graphene in Controlled Atmospheres: From Superhydrophilic to Superhydrophobic Surfaces

“…An often‐desired modification of graphene seeks to tune the hydrophilicity or hydrophobicity of the surface of graphene‐based materials, especially to achieve superhydrophobic surfaces that can be used for applications such as water and oil separation or anti‐icing . The specific approaches include sonicating graphene oxide (GO) in different solvents followed by drop‐coating, dip‐coating of sponges with thermally shocked GO, CVD synthesis of 3D graphene/carbon nanotube (CNT) hybrids, microwave‐assisted synthesis of graphene/CNT aerogels, and by introducing fluorine‐groups into the graphene‐based structures or surfaces . These involve coating graphene foam or gel with polyvinylidene difluoride or polytetrafluoroethylene (Teflon), modifying GO aerogels with perfluorodecyltrichlorosilane, and functionalizing graphene nanoribbons (GNRs) with perfluorododecyl groups, all of which exploit the lower surface energy of CF bonds to achieve even higher contact angles.…”

“…The specific approaches include sonicating graphene oxide (GO) in different solvents followed by drop‐coating, dip‐coating of sponges with thermally shocked GO, CVD synthesis of 3D graphene/carbon nanotube (CNT) hybrids, microwave‐assisted synthesis of graphene/CNT aerogels, and by introducing fluorine‐groups into the graphene‐based structures or surfaces . These involve coating graphene foam or gel with polyvinylidene difluoride or polytetrafluoroethylene (Teflon), modifying GO aerogels with perfluorodecyltrichlorosilane, and functionalizing graphene nanoribbons (GNRs) with perfluorododecyl groups, all of which exploit the lower surface energy of CF bonds to achieve even higher contact angles. Yet, within all the methods reported, usually multiple steps are required to yield the desired materials, and they all occur post‐graphene formation.…”

Highly cross‐linked UV‐cured siloxane copolymer networks as icephobic coatings

“…Smooth materials can be further divided into wet‐ and dry‐ type icephobic surfaces. This distinction has become important owing to the success of wet (i.e., lubricated) materials in reducing ice adhesion to well below 20 kPa . Such wet materials contain lubricating fluids that impart icephobicity through interfacial effects.…”

“…This distinction has become important owing to the success of wet (i.e., lubricated) materials in reducing ice adhesion to well below 20 kPa. [20][21][22] Such wet materials contain lubricating fluids that impart icephobicity through interfacial effects. Two prominent examples of these materials are slippery lubricant-infused porous surfaces (SLIPS) [21] consisting of a porous substrate filled with a lubricant, lubricated polymer networks (gels) [6,23] and self-lubricating coatings, such as those containing micellar structures.…”

Effect of Graphene Coating on the Heat Transfer Performance of a Composite Anti-/Deicing Component

“…Thus, the electrical energy is converted into Joule heat to remove ice from a static helicopter rotor blade [32,33]. Subsequently, a graphene coating with anti-icing and deicing ability was developed by applying the lubricant [34].…”