Energy harvesting study on single and multilayer ferroelectret foams under compressive force

摘要: Cellular polypropylene (PP) ferroelectret is a thin and flexible cellular polymer foam that generates electrical power under mechanical force. This work investigates single multilayer PP foams their potential to supply energy for human-body-worn sensors. Human foot-fall emulated using an electrodynamic instrument, allowing applied compressive force momentum be correlated with output. Peak power, output pulse duration, per strike derived experimentally as function of momentum, shown strong external load resistance, thus providing clear maximum point. The possibility increasing time reducing voltage CMOS compatible levels at some expense peak shown. To further increase the presented. synchronized generation each layer studied illustrated simulation, results are supported by experiments. Finally, single-layer multi-layer ferroelectrets compared charging capacitor via rectifier. A ten-layer have ability 29.1 times better than ferroelectret. It demonstrates capable powering start-up transmission typical low-power wireless sensor chipset.