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Lead‐Free Bi0.5(Na0.78K0.22)TiO3 Nanoparticle Filler–Elastomeric Composite Films for Paper‐Based Flexible Power Generators
Advanced Electronic Materials ( IF 5.3 ) Pub Date : 2019-12-15 , DOI: 10.1002/aelm.201900950 Sung Sik Won 1 , Masami Kawahara 2 , Chang Won Ahn 3 , Joonhee Lee 4 , Jinkee Lee 5 , Chang Kyu Jeong 6 , Angus I. Kingon 1 , Seung‐Hyun Kim 1
Advanced Electronic Materials ( IF 5.3 ) Pub Date : 2019-12-15 , DOI: 10.1002/aelm.201900950 Sung Sik Won 1 , Masami Kawahara 2 , Chang Won Ahn 3 , Joonhee Lee 4 , Jinkee Lee 5 , Chang Kyu Jeong 6 , Angus I. Kingon 1 , Seung‐Hyun Kim 1
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Key solutions for material selection, processing, and performance of environmentally friendly high‐power generators are addressed. High voltage and high power generation of flexible devices using piezoelectric Bi0.5(Na0.78K0.22)TiO3 nanoparticle filler–polydimethylsiloxane (PDMS) elastomeric matrix for a lead‐free piezoelectric composite film on a cellulose paper substrate is demonstrated. To elucidate the principle of power generation by the piezoelectric composite configuration, the dielectric and piezoelectric characteristics of the composite film are investigated and the results are compared with those of theoretical modeling. The paper‐based composite generator produces a large output voltage of ≈100 V and an average current of ≈20 µA (max. ≈30 µA) through tapping stimulation, which is a record‐high performance compared to previously reported flexible lead‐free piezoelectric composite energy harvesters. Moreover, a triboelectric‐hybridized piezoelectric composite device using a micro‐patterned PDMS shows a much higher output voltage of ≈250 V and output power of ≈0.5 mW, which drives 300 light‐emitting diodes. These results prove that a new class of paper‐based and lead‐free energy harvesting device provides a strong possibility for enlarging the functionality and the capability of high‐power scavengers in flexible and wearable electronics such as sensors and medical devices.
中文翻译：
纸基柔性发电机用无铅Bi0.5（Na0.78K0.22）TiO3纳米颗粒填充物-弹性复合膜
解决了环保型大功率发电机在材料选择，加工和性能方面的关键解决方案。使用压电Bi 0.5（Na 0.78 K 0.22）TiO 3的柔性器件的高电压和高发电展示了用于纤维素纸基材上的无铅压电复合膜的纳米粒子填料-聚二甲基硅氧烷（PDMS）弹性体基质。为了阐明压电复合结构的发电原理，研究了复合膜的介电和压电特性，并将结果与理论模型进行了比较。纸基复合发生器通过敲击刺激产生≈100V的大输出电压和≈20µA（最大≈30µA）的平均电流，与之前报道的柔性无铅压电材料相比，这是创纪录的性能复合能量采集器。此外，使用微图案PDMS的摩擦电混合压电复合材料器件的输出电压高出约250 V，输出功率高出约0.5 mW，驱动300个发光二极管。这些结果证明，新型的纸质无铅能量收集设备为增强传感器和医疗设备等柔性可穿戴电子设备中的高功率清除剂的功能和能力提供了强大的可能性。
更新日期：2020-02-13
中文翻译：
纸基柔性发电机用无铅Bi0.5（Na0.78K0.22）TiO3纳米颗粒填充物-弹性复合膜
解决了环保型大功率发电机在材料选择，加工和性能方面的关键解决方案。使用压电Bi 0.5（Na 0.78 K 0.22）TiO 3的柔性器件的高电压和高发电展示了用于纤维素纸基材上的无铅压电复合膜的纳米粒子填料-聚二甲基硅氧烷（PDMS）弹性体基质。为了阐明压电复合结构的发电原理，研究了复合膜的介电和压电特性，并将结果与理论模型进行了比较。纸基复合发生器通过敲击刺激产生≈100V的大输出电压和≈20µA（最大≈30µA）的平均电流，与之前报道的柔性无铅压电材料相比，这是创纪录的性能复合能量采集器。此外，使用微图案PDMS的摩擦电混合压电复合材料器件的输出电压高出约250 V，输出功率高出约0.5 mW，驱动300个发光二极管。这些结果证明，新型的纸质无铅能量收集设备为增强传感器和医疗设备等柔性可穿戴电子设备中的高功率清除剂的功能和能力提供了强大的可能性。
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