Chen Jian-Xun, Li Jia-Wun, Tsai Wei-Yi, Lee Li-Xiang, Chiu Chih-Wei
Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.
Open Innovation, Makalot Industrial Co., Ltd., Taipei 11071, Taiwan.
J Colloid Interface Sci. 2025 Sep 15;694:137666. doi: 10.1016/j.jcis.2025.137666. Epub 2025 Apr 22.
Traditional inorganic/organic composite piezoelectric films suffer from cracking and a poor dispersion of inorganic fillers, which degrades performance. In this study, zinc oxide nanoparticles (ZnO NPs) were surface-modified with polydopamine (PDA) to obtain PDA-coated ZnO NPs (PDA@ZnO NPs). Then, graphene oxide (GO) in different proportions and these PDA@ZnO NPs were used to prepare GO-PDA@ZnO/polyvinylidene difluoride-trifluoroethylene (P(VDF-TrFE)) piezoelectric nanohybrid films. An appropriate GO content was found to significantly enhance the piezoelectric performance of the material. The GO-PDA@ZnO/P(VDF-TrFE) piezoelectric nanohybrid films exhibited superior properties for use in a flexible piezoelectric nanogenerator (FPENG), which could effectively harvest mechanical energy from human activities and convert it into electrical energy. Furthermore, FPENG showed excellent prospects for applications in wearable electronic products and as an energy harvester for shared bicycles. The high-performance FPENG designed in this study provides a novel strategy for realizing diverse energy harvesting.
传统的无机/有机复合压电薄膜存在开裂以及无机填料分散性差的问题，这会降低其性能。在本研究中，用聚多巴胺（PDA）对氧化锌纳米颗粒（ZnO NPs）进行表面改性，以获得聚多巴胺包覆的氧化锌纳米颗粒（PDA@ZnO NPs）。然后，使用不同比例的氧化石墨烯（GO）和这些PDA@ZnO NPs制备氧化石墨烯-聚多巴胺@氧化锌/聚偏二氟乙烯-三氟乙烯（P(VDF-TrFE)）压电纳米杂化薄膜。发现适当的GO含量可显著提高材料的压电性能。GO-PDA@ZnO/P(VDF-TrFE)压电纳米杂化薄膜在柔性压电纳米发电机（FPENG）中表现出优异的性能，该发电机能够有效地从人类活动中收集机械能并将其转化为电能。此外，FPENG在可穿戴电子产品以及作为共享单车的能量收集器方面显示出极好的应用前景。本研究中设计的高性能FPENG为实现多样化的能量收集提供了一种新策略。
