Highly conductive 1D-2D composite film for skin-mountable strain sensor and stretchable triboelectric nanogenerator
Highly conductive 1D-2D composite film for skin-mountable strain sensor and stretchable triboelectric nanogenerator
复制标题
用于皮肤安装应变传感器和可拉伸摩擦纳米发电机的高导电一维-二维复合薄膜
DOI：
10.1016/j.nanoen.2019.05.041
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发表时间：
2019-08-01
期刊：
影响因子：
17.6
通讯作者：
Ying, Yibin
中科院分区：
文献类型：
--
作者：
Lan, Lingyi;Yin, Tenghao;Ying, Yibin
智能可穿戴设备不断增长的需求引发了高可拉伸应变传感器和电源的快速发展。在这里，我们制造了一种三明治结构的可拉伸器件，其中复合膜封装在两层聚二甲基硅氧烷（PDMS）中。高导电复合薄膜由一维（1D）银纳米线（AgNW）网络和二维（2D）金属MoS2纳米片包裹而成。一维AgNW和二维金属MoS2纳米片的结合赋予复合薄膜优异的柔韧性和导电性，使其能够用作高性能皮肤贴装应变传感器，最大应变系数为215.4，拉伸率高达70%。此外，三明治结构装置可以用作可拉伸摩擦纳米发电机（STENG）。结果表明，面积为1 x 2.5 cm(2)的STENG可产生0.16 W/m(2)的平均功率密度。此外，即使在50%的拉伸比下，STENG也能保持稳定的输出性能。凭借出色的拉伸性，它可以在植物叶子等非平面不规则物体上完全保形。此外，我们还证明了所制造的 STENG 可以收集风能，并在附着到植物叶子上时充当自供电风速传感器。这项工作为可拉伸电源提供了新的前景，并展示了在可穿戴电子产品中的潜在应用。
The growing demand of intelligent wearable devices has triggered rapid development of highly stretchable strain sensors and power sources. Here, we fabricated a sandwich-structured stretchable device, where a composite film is encapsulated in two layers of polydimethylsiloxane (PDMS). The highly conductive composite film is composed of one-dimensional (1D) silver nanowires (AgNWs) network wrapped with two-dimensional (2D) metallic MoS2 nanosheets. The combination of 1D AgNWs and 2D metallic MoS2 nanosheets endows the composite film with excellent flexibility and conductivity, which enables their use as high-performance skin-mountable strain sensor with the maximum gauge factor of 215.4 and high stretchability up to 70%. Furthermore, the sandwich-structured device can serve as a stretchable triboelectric nanogenerator (STENG). Results show that the STENG with an area of 1 x 2.5 cm(2) could produce an average power density of 0.16 W/m(2). In addition, the STENG could retain stable output performance even under a stretching ratio of 50%. With the outstanding stretchability, it can be fully conformal on nonplanar irregular object such as plant leaves. Moreover, we demonstrated that the fabricated STENG could harvest wind energy and serve as a self-powered wind speed sensor when attached to plant leaves. This work provides new prospects for stretchable power sources and shows potential applications in wearable electronics.