Multi-mode Integrated Energy Harvester Utilizing Piezoelectricity and Triboelectricity

We have developed and demonstrated two types of energy harvesters based on piezoelectricity and triboelectricity for multiple energy harvesting applications. The structural and electrical properties of P(VDF-TrFE) were investigated by XRD, FTIR, oscilloscope, and low-noise current preamplifier. Type 1 device generated the voltage, current, and power of 2 V, 6.5 μA, and 6.5 μW, respectively, when subjected to air flow. Additionally, hybrid energy harvester (type 2) generated voltage, current, and power of 1 V, 4 μA, and 4 μW, respectively, from piezoelectricity, and voltage, current, and power of 3.5 V, 6.5 μA, and 22.75 μW, respectively, from triboelectricity, under mechanical force of 15 N with 1 Hz.