Al2o3 Nanotubes Based Teng for Triboelectrification and Cathodic Protection Anti-Corrosion Performance

Abstract

Triboelectrification is a green energy acquisition method, which has received extensive attention by researchers in recent years. Here, a triboelectrification nanogenerator with the surface of alumina nanostructures by anodic oxidation method was prepared. The triboelectric layer prepared by the anodizing method has an alumina nanotubes structure, and these alumina nanostructures can increase the output of triboelectricity. In order to further increase the current, the surface of these nanotubes are fluorinated, and its triboelectrical ability during friction with nylon 11 is enhanced. The triboelectric output is also enhanced. The current output of this TENG is 10.4 μA, while the triboelectric output of the aluminum-based TENG is 3.7 μA. Low surface energy compounds can be loaded in these alumina nanotubes, which can migrate to the surface of the alumina layer to achieve a triboelectrification self-healing property. In addition to supplying energy such as lighting, the electrical energy collected with TENG can also be used to protect carbon steel against corrosion through self-powered cathodic protection.

Keywords: alumina nanotube, triboelectric nanogenerator, energy harvesting, corrosion resistance, self-healing