3D printing individualized triboelectric nanogenerator with macro-pattern

To achieve the self-powered devices with individualized design in practical applications, this work reports an approach, 3D printing based on fused deposition modeling (FDM), which enables optimally digital designs of TENG device by efficiently harvesting ambient vibration energy. To further obtain satisfying output power and high mechanical energy conversion efficiency, we study the effect of filling rates, contact angles, widths of the zigzag pattern, excitation frequencies, input power and choice of materials on the output voltage of the TENG. The energy conversion efficiency of this vertical contact-separation mode reaches 63.9%. The maximum output voltage reaches 241 V and the current is 1.52 mA at 20 Hz.270