A coaxial triboelectric-electromagnetic hybrid generator for marine flow energy harvesting

This is the authors' abstract. We don't add key points for this paper.

The marine stereoscopic observation network is a key technological support for developing the marine economy and safeguarding maritime sovereignty. However, the endurance and deployment range of observation nodes are severely constrained by their power supply systems. In this paper, we propose a Triboelectric-Electromagnetic Hybrid Nanogenerator (TEHN) to harvest kinetic energy from the ocean environment. By combining the high-voltage, low-current output of a triboelectric nanogenerator (TENG) with the low-voltage, high-current characteristics of an electromagnetic generator (EMG), the TEHN achieves efficient energy conversion over a wide frequency range. Experimental results demonstrate that the TEHN offers enhanced charging performance, adaptive load matching, and stable AC-DC output under varying excitation. It further enables autonomous sensor operation and wireless data transmission without external power input, showing strong potential for scalable, maintenance-free marine observation networks.