Synthesis of Orthorhombic Perovskite-Type ZnSnO3 Single-Crystal Nanoplates and Their Application in Energy Harvesting
Synthesis of Orthorhombic Perovskite-Type ZnSnO3 Single-Crystal Nanoplates and Their Application in Energy Harvesting
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斜方钙钛矿型ZnSnO3单晶纳米片的合成及其在能量收集中的应用
DOI：
10.1021/acsami.6b16629
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发表时间：
2017-03-08
影响因子：
9.5
通讯作者：
Liu, Hezhou
中科院分区：
文献类型：
--
作者：
Guo, Runjiang;Guo, Yiping;Liu, Hezhou
近年来，无铅压电纳米发电机因其从环境中获取能量的巨大潜力而引起了人们的极大关注。在这里，我们首次报道了二维单晶六角形锌锡纳米板的合成和基于纳米板的锌锡氧化物纳米发电机的制备。采用水热一步法成功地合成了具有(111)晶面的钙钛矿结构的锌锡纳米板材。然后将所合成的单晶SnO_3纳米板与聚二甲基硅氧烷(PDMS)制备成压电纳米发电机。在没有任何极化处理的情况下，得到了高达49pC/N的ZnSnO_3@PDMS复合材料的d(33)值，这表明所制备的单晶ZnSnO_3纳米片具有单一的磁畴结构。据我们所知，这个d(33)值也是无铅压电复合材料中最高的。弯曲应变可以诱导压电纳米发电机产生大的、稳定的、可持续的输出开路电压20V和短路电流0.6mA，这比许多其他的纳米发电机都要高。输出信号足以点亮一个发光二极管(LED)，这表明该材料在从移动实体(如道路车辆、铁路车辆和人类)中清除机械能量的巨大潜力。
In recent years, lead-free piezoelectric nanogenerators have attracted much attention because of their great potential for harvesting energy from the environment. Here, we report the first synthesis of two-dimensional (2D) single-crystal ZnSnO3 hexagon nanoplates and the fabrication of ZnSnO3 nanoplate-based nanogenerators. The orthorhombic perovskite-structured ZnSnO3 nanoplates with (111) facets of the exposed plate surface are successfully synthesized via a one-step hydrothermal reaction. Piezoelectric nanogenerators are then fabricated using the as synthesized single-crystal ZnSnO3 nanoplates and poly(dimethylsiloxane) (PDMS). A d(33) value as high as 49 pC/N for the ZnSnO3@PDMS composite was obtained without any electrical poling process, which demonstrates that the single-crystal ZnSnO3 nanoplates have a single domain structure. To the best of our knowledge, this d(33) value is also the highest among lead-free piezoelectric composites. A bending strain can induce the piezoelectric nanogenerator (PENG) to generate a large, stable, and sustainable output open circuit voltage of 20 V and a short circuit current of 0.6 mu A, which are higher than many other PENGs. The output signals are sufficient to light a single light-emitting diode (LED), which shows the great potential of the material for scavenging mechanical energy from moving entities, such as road vehicles, railway vehicles, and humans.