High-performance piezoelectric nanogenerators based on chemically-reinforced composites†,Energy & Environmental Science

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High-performance piezoelectric nanogenerators based on chemically-reinforced composites†
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2018-03-13 00:00:00 , DOI: 10.1039/c8ee00014j
Eun Jung Lee _{1,

2,

3,

4} , Tae Yun Kim _{4,

5,

6,

7} , Sang-Woo Kim _{4,

5,

6,

7} , Sunho Jeong _{1,

2,

3,

4} , Youngmin Choi _{1,

2,

3,

4} , Su Yeon Lee _{1,

2,

3,

4}

Affiliation

High-performance flexible piezoelectric nanogenerators (PNGs) based on composite thin films comprising amine-functionalized lead zirconate titanate (PZT) nanoparticles (PZT-NH₂ NPs) and a thermoplastic triblock copolymer grafted with maleic anhydride are fabricated. The chemically reinforced composite contains a stable dispersion of PZT NPs within the polymer matrix with enhanced stress applied to the PZT NPs. Without additional dispersants, the uniform distribution of PZT-NH₂ NPs in the polymer composite improves the piezoelectric power generation compared to that of a PNG device using pristine PZT NPs. This unique composite behavior allows the PZT-NH₂ NP-based flexible PNG to exhibit a high output voltage of 65 V and current of 1.6 μA without time-dependent degradation. This alternating energy from the PNG can be used to charge a capacitor and operate light-emitting diodes through a full bridge rectifier. Furthermore, the proposed PNG is demonstrated as a promising energy harvester for potential applications in self-powered systems.

中文翻译：

基于化学增强复合材料的高性能压电纳米发电机†

制备了基于复合薄膜的高性能柔性压电纳米发电机（PNG），该复合薄膜包括胺官能化钛酸锆钛酸铅（PZT）纳米颗粒（PZT-NH ₂ NPs）和接枝马来酸酐的热塑性三嵌段共聚物。化学增强的复合材料在聚合物基质中包含稳定的PZT NP分散体，并在PZT NP上施加了更大的应力。与使用原始PZT NPs的PNG装置相比，在没有其他分散剂的情况下，PZT-NH ₂ NPs在聚合物复合材料中的均匀分布改善了压电发电。这种独特的复合性能使PZT-NH ₂基于NP的柔性PNG表现出65 V的高输出电压和1.6μA的电流，而不会随时间而变差。来自PNG的这种交流能量可用于为电容器充电，并通过全桥整流器操作发光二极管。此外，拟议的PNG被证明是有前途的能量收集器，可用于自供电系统中的潜在应用。

更新日期：2018-03-13

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