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Fully Rollable Lead-Free Poly(vinylidene fluoride)-Niobate-Based Nanogenerator with Ultra-Flexible Nano-Network Electrodes
ACS Nano ( IF 15.8 ) Pub Date : 2018-04-27 00:00:00 , DOI: 10.1021/acsnano.8b01534 Chen Zhang 1, 2 , Youjun Fan 2, 3 , Huayang Li 2, 3 , Yayuan Li 1 , Lei Zhang 2, 4 , Shubo Cao 1 , Shuangyang Kuang 2, 3 , Yongbin Zhao 5 , Aihua Chen 1, 6 , Guang Zhu 2, 3, 7 , Zhong Lin Wang 2, 3, 8
ACS Nano ( IF 15.8 ) Pub Date : 2018-04-27 00:00:00 , DOI: 10.1021/acsnano.8b01534 Chen Zhang 1, 2 , Youjun Fan 2, 3 , Huayang Li 2, 3 , Yayuan Li 1 , Lei Zhang 2, 4 , Shubo Cao 1 , Shuangyang Kuang 2, 3 , Yongbin Zhao 5 , Aihua Chen 1, 6 , Guang Zhu 2, 3, 7 , Zhong Lin Wang 2, 3, 8
Affiliation
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A fully rollable nanocomposite-based nanogenerator (NCG) is developed by integrating a lead-free piezoelectric hybrid layer with a type of nanofiber-supported silver nanowire (AgNW) network as electrodes. The thin-film nanocomposite is composed of electroactive polyvinylidene fluoride (PVDF) polymer matrix and compositionally modified potassium sodium niobate-based nanoparticles (NPs) with a high piezoelectric coefficient (d33) of 53 pm/V, which is revealed by the piezoresponse force microscopy measurements. Under periodical agitation at a compressive force of 50 N and 1 Hz, the NCG can steadily render high electric output up to an open-circuit voltage of 18 V and a short-circuit current of 2.6 μA. Of particular importance is the decent rollability of the NCG, as indicated by the negligible decay in the electric output after it being repeatedly rolled around a gel pen for 200 cycles. Besides, the biocompatible NCG can potentially be used to scavenge biomechanical energy from low-frequency human motions, as demonstrated by the scenarios of walking and elbow joint movement. These results rationally expand the feasibility of the developed NCG toward applications in lightweight, diminutive, and multifunctional rollable or wearable electronic devices.
中文翻译：
完全可滚动的无铅聚偏二氟乙烯-铌酸盐纳米发生器，具有超柔性纳米网络电极。
通过将无铅压电混合层与一种纳米纤维支撑的银纳米线（AgNW）网络作为电极集成在一起，开发出了一种可完全滚动的基于纳米复合材料的纳米发电机（NCG）。薄膜纳米复合材料由电活性聚偏二氟乙烯（PVDF）聚合物基体和成分修饰的具有高压电系数的铌酸钾钠基纳米颗粒（NPs）组成（d 33）的53 pm / V），这是通过压电响应力显微镜测量得到的。在以50 N和1 Hz的压缩力进行周期性搅拌的情况下，NCG可以稳定地提供高电输出，直至18 V的开路电压和2.6μA的短路电流。特别重要的是NCG的良好滚动性，如在中性笔周围反复滚动200次后，其电输出的衰减可忽略不计。此外，生物相容性NCG可以潜在地用于从低频人体运动中清除生物力学能量，如步行和肘关节运动的场景所示。这些结果合理地扩展了已开发的NCG在轻便，小型和多功能可卷曲或可穿戴电子设备中的可行性。
更新日期：2018-04-27
中文翻译：
完全可滚动的无铅聚偏二氟乙烯-铌酸盐纳米发生器，具有超柔性纳米网络电极。
通过将无铅压电混合层与一种纳米纤维支撑的银纳米线（AgNW）网络作为电极集成在一起，开发出了一种可完全滚动的基于纳米复合材料的纳米发电机（NCG）。薄膜纳米复合材料由电活性聚偏二氟乙烯（PVDF）聚合物基体和成分修饰的具有高压电系数的铌酸钾钠基纳米颗粒（NPs）组成（d 33）的53 pm / V），这是通过压电响应力显微镜测量得到的。在以50 N和1 Hz的压缩力进行周期性搅拌的情况下，NCG可以稳定地提供高电输出，直至18 V的开路电压和2.6μA的短路电流。特别重要的是NCG的良好滚动性，如在中性笔周围反复滚动200次后，其电输出的衰减可忽略不计。此外，生物相容性NCG可以潜在地用于从低频人体运动中清除生物力学能量，如步行和肘关节运动的场景所示。这些结果合理地扩展了已开发的NCG在轻便，小型和多功能可卷曲或可穿戴电子设备中的可行性。
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