Single-electrode triboelectric nanogenerators based on sponge-like porous PTFE thin films for mechanical energy harvesting and self-powered electronics
Single-electrode triboelectric nanogenerators based on sponge-like porous PTFE thin films for mechanical energy harvesting and self-powered electronics
复制标题
基于海绵状多孔 PTFE 薄膜的单电极摩擦纳米发电机，用于机械能收集和自供电电子设备
DOI：
10.1039/c7ta02680c
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发表时间：
2017-06-28
影响因子：
11.9
通讯作者：
Liang, Erjun
中科院分区：
文献类型：
--
作者：
Wang, Meng;Zhang, Nan;Liang, Erjun
摩擦电纳米发电机(TNG)是一种基于摩擦将机械能转化为电能的新型能量转换装置。本文报道了一种基于海绵状多孔聚四氟乙烯(PTFE)薄膜的单电极Teng(S-Teng)的研制。以去离子水为软模板，通过一种简便的方法制备了多孔PTFE薄膜。在机械振荡条件下，研究了孔隙率对多孔聚四氟乙烯S-腾材料输出性能的影响。当DI水体积分数为50%时，获得最大VOC产量的最佳孔隙率为5.1V。在相同的振荡条件下，多孔聚四氟乙烯S-腾的输出电压是固体聚四氟乙烯薄膜S-腾的1.8倍。多孔的聚四氟乙烯S-腾还可以通过从人体运动中获取机械能来产生可观的电力。当S灯被徒手按压时，输出电压为1.1V。当用手按压在乳胶手套内时，输出电压达到6.9V，产生的电能可以瞬间为5个商用绿色发光二极管(LED)供电，而不需要任何储能过程。这种多孔聚四氟乙烯S-腾的开发可能会为开发自供电个人电子产品开辟一条新的途径，因为它具有灵活性，简单的单电极结构，以及从人体运动中获取机械能量的能力。
Triboelectric nanogenerators (TENGs) are promising innovative energy conversion devices that convert mechanical energy into electricity based on triboelectric friction. In this paper, we report the development of a single-electrode TENG (S-TENG) based on sponge-like porous polytetrafluoroethylene (PTFE) thin films. The porous PTFE thin films were fabricated via a facile approach by using deionized (DI) water as the soft template. The porosity effect on the output performance of the porous PTFE S-TENG was investigated under mechanical oscillations. The optimal porosity for achieving the maximum VOC output was found to be 5.1 V when the DI water volume fraction was 50%. The output voltage of the porous PTFE S-TENG is 1.8 times higher than that of the solid PTFE thin film based S-TENG under the same oscillation. The porous PTFE S-TENG can also generate considerable electricity by harvesting mechanical energy from human motions. An output voltage of 1.1 V was obtained when the S-TENG was pressed by a bare human hand. When pressed by a human hand within a latex glove, the output voltage reached 6.9 V, and the generated electric energy could instantaneously power 5 commercial green light emitting diodes (LEDs) without any energy storage process. This development of the porous PTFE S-TENG could open a new avenue towards developing self-powered personal electronics, owing to its flexibility, simple one-electrode structure, and ability to harvest mechanical energy from human motions.