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首页> 外文期刊>RSC Advances >A flexible lead-free piezoelectric nanogenerator based on vertically aligned BaTiO3 nanotube arrays on a Ti-mesh substrate
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A flexible lead-free piezoelectric nanogenerator based on vertically aligned BaTiO3 nanotube arrays on a Ti-mesh substrate

机译：基于垂直对齐的BATIO3纳米管阵列的柔性无铅压电纳米料阵列在Ti-网状基材上

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摘要

A uniform piezoelectric film on a flexible substrate is highly desirable for the construction of mechanical energy harvesting devices and self-powered sensors. In this study, we synthesized piezoelectrically active tetragonal phase BaTiO3 (BTO) nanotube arrays uniformly coated on a flexible Ti-mesh substrate by in situ conversion of anodized TiO2 nanotubes using a low temperature hydrothermal process. The direct conversion of the TiO2 nanotube to tetragonal phase BTO provides an excellent way to make flexible composites with a uniform distribution and enhanced volume fraction of piezoelectrically active BTO film. Based on the merits of the tetragonal phase BTO film on a Ti-mesh substrate, a novel fully bendable and mechanically robust piezoelectric nanogenerator (PENG) was fabricated. The oriented tetragonal phase BTO nanotube film on the Ti-mesh substrate was encapsulated in a polydimethylsiloxane (PDMS) elastomeric layer and assembled between two indium tin oxide (ITO) coated polyethylene terephthalate (PET) electrodes to form a flexible PENG. The PENG device can harvest mechanical energy from repeated bending and releasing motions. The resulting output voltage and current reached up to 10.6 V and 1.1 mu A, respectively. The output power generated was sufficient to instantaneously light a full screen liquid crystal display (LCD). The Ti-mesh/BTO-based PENG device is lead-free and does not have a toxic dispersion enhancer. It is a promising candidate for self-powered sensors and biomedical device applications.
机译：在柔性基板上的均匀压电膜非常希望用于构造机械能量收集装置和自动传感器。在该研究中，通过使用低温水热法，通过原位转化在柔性TiO2纳米管中均匀地涂覆在柔性Ti-Mesh基板上的压电活性四方相BatiO3（BTO）纳米管阵列。 TiO2纳米管与四方相BTO的直接转化为制备具有均匀分布和增强压电活性BTO膜的体积分数的柔性复合材料提供了优异的方法。基于TiG-Meabh基材的四方相BTO膜的优点，制造了一种新的完全可弯曲和机械稳健的压电纳米液（韧性）。在Ti-网状物基质上取向的四方相B纳米管膜在聚二甲基硅氧烷（PDMS）弹性层中包封，并在两个氧化铟锡（ITO）涂覆的聚对苯二甲酸乙二醇酯（PET）电极之间组装以形成柔性韧性。彭设备可以从重复弯曲和释放动作中收获机械能。产生的输出电压和电流分别达到10.6V和1.1μma。产生的输出功率足以瞬间点亮全屏液晶显示器（LCD）。 Ti-Mesh / BTO的彭料装置是无铅的，没有有毒分散增强剂。它是自动传感器和生物医学设备应用的有希望的候选者。

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  • 来源
    《RSC Advances》 |2016年第84期|共10页
  • 作者

    Tsege Ermias Libnedengel; Kim Gyu Han; Annapureddy Venkateswarlu; Kim Beomkeun; Kim Hyung-Kook; Hwang Yoon-Hwae;

  • 作者单位

    Pusan Natl Univ Dept Nano Energy Engn Miryang 627706 South Korea;

    Pusan Natl Univ Dept Nano Energy Engn Miryang 627706 South Korea;

    KIMS Funct Ceram Grp Chang Won 51508 Gyeongnam South Korea;

    Inje Univ High Safety Vehicle Core Technol Res Ctr Dept Elect Telecommun Mech &

    Automot Engn 197 Inje Ro Gimhae 621749 Gyeongnam South Korea;

    Pusan Natl Univ Dept Nano Energy Engn Miryang 627706 South Korea;

    Pusan Natl Univ Dept Nano Energy Engn Miryang 627706 South Korea;

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  • 中图分类 化学;
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