Abstract
Triboelectric nanogenerators have received significant research attention in recent years. Structural design plays a critical role in improving the energy harvesting performance of triboelectric nanogenerators. Here, we develop the magnetic capsulate triboelectric nanogenerators (MC-TENG) for energy harvesting under undesirable mechanical excitations. The capsulate TENG are designed to be driven by an oscillation-triggered magnetic force in a holding frame to generate electrical power due to the principle of the freestanding triboelectrification. Experimental and numerical studies are conducted to investigate the electrical performance of MC-TENG under cyclic loading in three energy harvesting modes. The results indicate that the energy harvesting performance of the MC-TENG is significantly affected by the structure of the capsulate TENG. The copper MC-TENG systems are found to be the most effective design that generates the maximum mode of the voltage range is 4 V in the closed-circuit with the resistance of 10 GΩ. The proposed MC-TENG concept provides an effective method to harvest electrical energy from low-frequency and low-amplitude oscillations such as ocean wave.
Highlights
Triboelectric nanogenerators have received significant research attention in recent years
Since the capsules are embedded with the end magnets that are oppositive of the driven magnets, the magnetic force pushes/attracts the capsules to periodically move in the holding frame
Since the magnetic capsulate triboelectric nanogenerators (MC-Triboelectric nanogenerators (TENG)) is developed based on the freestanding triboelectric layer mode, it is critical to enhance the sliding motion of the capsulate TENG between the driven magnets
Summary
Triboelectric nanogenerators have received significant research attention in recent years. A dielectric capsulate TENG is driven by the oscillation-triggered magnetic force into a holding electrode frame to generate electrical power in a freestanding triboelectric layer mode.
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