Abstract
Biomass resource utilization promotes low-carbon technology advancement, and combining it with the superhydrophobic materials for ice-phobic coatings on wind turbine blades is conducive to environmental protection and developing clean energy. In this study, a Fe3O4-loaded biochar-based superhydrophobic ice-phobic coating with photothermal conversion effect was prepared from corncob. The decreased oxygen-to-carbon ratio of the carbon-based material reduced the surface energy, and its synergistic effect with the rough structure contributed to the superhydrophobicity of the coating. Icing wind tunnel experiments showed a reduction in blade icing mass of at most 32.71 % due to the generation of droplet bounce when colliding with the blade surface. Biochar-based materials efficiently absorbed optical energy and vibrational heat production of FeO bond during illumination, which enabled the coating to warm up to 55.9 °C and advance the de-icing rate by 42.71 %. This study provides new ideas for the application of biomass resources in the field of anti-icing/de-icing for wind energy.
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