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首页> 外文期刊>RSC Advances >High output power density nanogenerator based on lead-free 0.96(K0.48Na0.52)(Nb0.95Sb0.05)O-3-0.04Bi(0.5)(Na0.82K0.18)(0.5)ZrO3 piezoelectric nanofibers
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High output power density nanogenerator based on lead-free 0.96(K0.48Na0.52)(Nb0.95Sb0.05)O-3-0.04Bi(0.5)(Na0.82K0.18)(0.5)ZrO3 piezoelectric nanofibers

机译：基于无铅0.96（K0.48Na0.52）（Nb0.95Sb0.05）O-3-0.04Bi（0.5）（Na0.82K0.18）（0.5）ZrO3压电纳米纤维的高输出功率密度纳米发电机

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摘要

Piezoelectric nanogenerators that power microano devices by converting surrounding tiny mechanical vibration into electrical energy and getting rid of batteries and power cables is attracting increasing attention in recent years. Piezoelectric nanocomposites combining the flexibility of polymers and piezoelectricity of nanostructures are the current research hot spot in this field. However, usually the piezoelectric constant (d(33)) of piezoelectric nanostructures cannot compete with those of ceramics, and that of lead-free nanostructures is even worse, leading to low output voltages and seriously restricting their applications. Here, we report a new piezoelectric nanocomposite based on 0.96(K0.48Na0.52)(Nb0.95Sb0.05)O-3-0.04Bi(0.5)(Na0.82K0.18)(0.5)ZrO3 (KNNS-BNKZ) electrospun nanofibers with a ultrahigh d(33) of 338 pm V-1 and significantly improved energy harvesting performance. Our KNNS-BNKZ nanofiber-based nanogenerator can generate an output voltage up to 10 V which is more than three times that of other reported lead-free piezoelectric nanocomposites. In addition, our nanogenerator can charge a capacitor up to 0.33 mu F and 8 V in 45 seconds by hand-pressing after rectifying, showing its great potential in powering microano electronic devices and sensors.
机译：压电纳米发电机通过将周围的微小机械振动转化为电能并摆脱了电池和电力电缆，从而为微型/纳米设备提供动力，近年来引起了越来越多的关注。压电纳米复合材料结合了聚合物的柔性和纳米结构的压电性是该领域的当前研究热点。但是，通常压电纳米结构的压电常数（d（33））不能与陶瓷竞争，而无铅纳米结构的压电常数甚至更差，导致输出电压低，严重限制了其应用。在这里，我们报告了一种基于0.96（K0.48Na0.52）（Nb0.95Sb0.05）O-3-0.04Bi（0.5）（Na0.82K0.18）（0.5）ZrO3（KNNS-BNKZ）的新型压电纳米复合材料具有338 pm V-1的超高d（33）的电纺纳米纤维，并显着提高了能量收集性能。我们的KNNS-BNKZ纳米纤维纳米发电机可产生高达10 V的输出电压，是其他报道的无铅压电纳米复合材料的三倍以上。此外，我们的纳米发电机可在整流后用手按压，在45秒内为一个电容器充电，最高可达0.33μF和8 V电压，显示出其为微型/纳米电子设备和传感器供电的巨大潜力。

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