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Enhanced dielectric, ferroelectric, energy storage and mechanical energy harvesting performance of ZnO–PVDF composites induced by MWCNTs as an additive third phase
Soft Matter ( IF 2.9 ) Pub Date : 2021-08-16 , DOI: 10.1039/d1sm00854d Shewli Pratihar 1 , Aniket Patra 2 , Abhishek Sasmal 1 , Samar Kumar Medda 3 , Shrabanee Sen 1
Soft Matter ( IF 2.9 ) Pub Date : 2021-08-16 , DOI: 10.1039/d1sm00854d Shewli Pratihar 1 , Aniket Patra 2 , Abhishek Sasmal 1 , Samar Kumar Medda 3 , Shrabanee Sen 1
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The present work highlights an attempt of fabricating a nanocomposite by the addition of multi-walled carbon nanotubes (MWCNTs) as a third phase into flexible ZnO–poly(vinylidene fluoride) (ZnO–PVDF) composites. MWCNTs played a very important role in distributing ZnO fillers in the PVDF matrix more homogeneously and increased the connection capability. Enhancement of the piezoelectric phase, dielectric permittivity, ferroelectric polarization, energy storage density and mechanical energy harvesting performance of ZnO–PVDF composites after the addition of MWCNTs was confirmed from the respective characterization studies. The sensing capability was demonstrated by the generation of ∼22 V ac output voltage through the application of human finger tapping on 15 wt% ZnO and a 0.1 wt% MWCNT-loaded PVDF (15PZNT) based composite film. The rectified voltage from the fabricated 15PZNT film was used to charge a 10-μF capacitor up to ∼3 V which was used for the illumination of 30 commercial LEDs. The maximum power density from the film was found to be 21.41 μW cm−2 at 4 MΩ load resistance. The effect of the addition of MWCNTs was also verified by simulation using COMSOL Multiphysics software.
中文翻译：
由多壁碳纳米管作为添加剂第三相诱导的 ZnO-PVDF 复合材料的介电、铁电、能量存储和机械能收集性能增强
目前的工作强调了通过将多壁碳纳米管（MWCNT）作为第三相添加到柔性 ZnO-聚（偏二氟乙烯）（ZnO-PVDF）复合材料中来制造纳米复合材料的尝试。MWCNTs 在使 ZnO 填料更均匀地分布在 PVDF 基体中并增加连接能力方面发挥了非常重要的作用。各自的表征研究证实了添加 MWCNTs 后 ZnO-PVDF 复合材料的压电相、介电常数、铁电极化、储能密度和机械能量收集性能的增强。通过在 15 wt% ZnO 和 0.1 wt% MWCNT 负载 PVDF (15PZNT) 基复合膜上应用人类手指敲击，产生 ~22 V 交流输出电压证明了传感能力。来自制造的 15PZNT 薄膜的整流电压用于将 10-μF 电容器充电至约 3 V，该电容器用于照明 30 个商用 LED。发现薄膜的最大功率密度为 21.41 μW cm−2在 4 MΩ 负载电阻时。添加多壁碳纳米管的效果也通过使用 COMSOL Multiphysics 软件的仿真得到了验证。
更新日期：2021-09-01
中文翻译：
由多壁碳纳米管作为添加剂第三相诱导的 ZnO-PVDF 复合材料的介电、铁电、能量存储和机械能收集性能增强
目前的工作强调了通过将多壁碳纳米管（MWCNT）作为第三相添加到柔性 ZnO-聚（偏二氟乙烯）（ZnO-PVDF）复合材料中来制造纳米复合材料的尝试。MWCNTs 在使 ZnO 填料更均匀地分布在 PVDF 基体中并增加连接能力方面发挥了非常重要的作用。各自的表征研究证实了添加 MWCNTs 后 ZnO-PVDF 复合材料的压电相、介电常数、铁电极化、储能密度和机械能量收集性能的增强。通过在 15 wt% ZnO 和 0.1 wt% MWCNT 负载 PVDF (15PZNT) 基复合膜上应用人类手指敲击，产生 ~22 V 交流输出电压证明了传感能力。来自制造的 15PZNT 薄膜的整流电压用于将 10-μF 电容器充电至约 3 V，该电容器用于照明 30 个商用 LED。发现薄膜的最大功率密度为 21.41 μW cm−2在 4 MΩ 负载电阻时。添加多壁碳纳米管的效果也通过使用 COMSOL Multiphysics 软件的仿真得到了验证。
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