Qin Wancheng, Zhou Peng, Qi Yajun, Zhang Tianjin
Ministry of Education Key Laboratory for Green Preparation and Application of Functional Materials, Hubei Provincial Key Laboratory of Polymers, School of Materials Science and Engineering, Hubei University, Wuhan 430062, China.
Micromachines (Basel). 2020 Oct 28;11(11):966. doi: 10.3390/mi11110966.
Nowadays, wearable and flexible nanogenerators are of great importance for portable personal electronics. A flexible piezoelectric energy harvester (f-PEH) based on BiNdTiO single crystalline nanoplates (BNdT NPs) and polydimethylsiloxane (PDMS) elastomeric polymer was fabricated, and high piezoelectric energy harvesting performance was achieved. The piezoelectric output performance is highly dependent on the mass ratio of the BNdT NPs in the PDMS matrix. The as-prepared f-PEH with 12.5 wt% BNdT NPs presents the highest output voltage of 10 V, a peak-peak short-circuit current of 1 μA, and a power of 1.92 μW under tapping mode of 6.5 N at 2.7 Hz, which can light up four commercial light emitting diodes without the energy storage process. The f-PEHs can be used to harvest daily life energy and generate a voltage of 2-6 V in harvesting the mechanical energy of mouse clicking or foot stepping. These results demonstrate the potential application of the lead-free BNdT NPs based f-PEHs in powering wearable electronics.
如今，可穿戴和柔性纳米发电机对便携式个人电子产品极为重要。基于铋钕钛氧化物单晶纳米片（BNdT NPs）和聚二甲基硅氧烷（PDMS）弹性体聚合物制备了一种柔性压电能量收集器（f-PEH），并实现了高的压电能量收集性能。压电输出性能高度依赖于BNdT NPs在PDMS基体中的质量比。所制备的含12.5 wt% BNdT NPs的f-PEH在6.5 N、2.7 Hz的敲击模式下呈现出最高输出电压10 V、峰-峰值短路电流1 μA以及功率1.92 μW，无需能量存储过程即可点亮四个商用发光二极管。f-PEH可用于收集日常生活能量，并在收集鼠标点击或脚步踩踏的机械能时产生2 - 6 V的电压。这些结果证明了基于无铅BNdT NPs的f-PEH在为可穿戴电子产品供电方面的潜在应用。
