Hydrophobic organic coating based water--solid TENG for water-flow energy collection and self-powered cathodic protection

• Published in: Frontiers of materials science Vol. 15; no. 4; pp. 601 - 610
• Main Authors: LIU, Yupeng, SUN, Guoyun, LIU, Ying, SUN, Weixiang, WANG, Daoai
• Format: Journal Article
• Language: English
• Published: Beijing Higher Education Press 01.12.2021; Springer Nature B.V
• Subjects: Acrylic resins; anticorrosion; Cathodic coating (process); Cathodic protection; Chemistry and Materials Science; Collection; Corrosion prevention; Corrosion resistance; Energy; energy collection; Energy harvesting; Energy transfer; hydrophobic coating; Materials Science; Nanogenerators; Organic coatings; Polyacrylic acid; Protective coatings; Research Article; TENG; Water flow; hydrophobic coating; anticorrosion; TENG; cathodic protection; energy collection
• ISSN: 2095-025X; 2095-0268
• DOI: 10.1007/s11706-021-0575-3

Water-solid triboelectric nanogenerators (TENGs), as new energy collection devices, have attracted increasing attention in ocean energy harvesting and self-powered sensing. Polyacrylic acid (PAA) coating, usually used on the surface of marine equipment, has the property of anti-aging and anti-wear but limits triboelectrical output when used with TENGs. In this paper, polyacrylic acid coating was modified with fluorinated polyacrylate resin (F-PAA) to increase its triboelectrical output, by 6 times, and also to increase its anti-corrosion property. In addition, the corrosion resistance property can be further enhanced by cathodic protection using the electrical output generated by the water-flow triboelectrical energy transfer process. Given their easy fabrication, water-flow energy harvesting, and corrosion resistance, PAA/F-PAA coating-based TENGs have promising applications in river and ocean energy collection and corrosion protection.