Hydrostatic Pressure Contact Improves the Performance of Triboelectric Nanogenerators

ABSTRACT Finding a simple, fast, and low‐cost method to enhance triboelectric nanogenerators (TENG) has always been a concern for researchers. In recent years, significant progress has been made in the fields of material modification and surface engineering; however, substantial opportunities for further exploration remain. A method is proposed to enhance the electrical output of a TENG by employing a flexible fluid‐filled bag as both a triboelectric material and a mechanical support. By this simple and efficient approach, the output of the TENG can be increased up to 200%. Two mechanisms, namely the interface slow spreading effect and the hydrostatic pressure effect, are identified, and the mechanism underlying the enhanced TENG output was discussed from the perspective of interface contact. Cathodic protection tests using the modified TENG reduced the corrosion potential of carbon steel by 300 mV, with corrosion morphology confirming its anti‐corrosion effectiveness. Its application as a flame sensor is also validated. Finally, based on the aforementioned cathodic protection, a conceptual framework for the self‐powered anti‐corrosion and safety alarm system of offshore oil platforms is constructed. Provide a technical approach for the development and implementation of future ocean strategies.