To obtain an electrothermal component configuration with high efficiency， energy conservation， and excellent electrical and thermal conductivity，two materials-graphene （Gr） and carbon nanotubes （CNTs）-that exhibited a synergistic effect were selected.A standard spraying method was adopted to prepare patterned electrothermal coatings， and an electrothermal deicing device was designed based on these coatings.Carbonized conductive oil-based CNT-GO（Carbon nanotube-graphene oxide） was used for coating preparation.Scanning electron microscopy （SEM） was employed to analyze the microscopic morphology of the coating，revealing the internal mechanism underlying the changes in its electrothermal properties at the microscale.Meanwhile，tests on the electrothermal heating performance and deicing performance of the deicing device prototype were conducted on a self-built deicing experimental bench.The results show that the grid-shaped heating coating has a faster temperature rise rate and better surface temperature uniformity.The electrothermal deicing device based on this new type of coating features a simple structure and can be easily integrated with aircraft surfaces.The average temperature generated during its electrothermal process can effectively accelerate ice melting，which verifies the feasibility of this configuration design in reducing the energy consumption of electrothermal deicing.