Enhancing Performance of Triboelectric Nanogenerator by Filling High Dielectric Nanoparticles into Sponge PDMS Film
Enhancing Performance of Triboelectric Nanogenerator by Filling High Dielectric Nanoparticles into Sponge PDMS Film
复制标题
将高介电纳米粒子填充到海绵PDMS薄膜中增强摩擦纳米发电机的性能
DOI：
10.1021/acsami.5b09907
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发表时间：
2016-01-13
影响因子：
9.5
通讯作者：
Hu, Chenguo
中科院分区：
文献类型：
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作者：
Chen, Jie;Guo, Hengyu;Hu, Chenguo
从材料的角度理解摩擦电荷积累对于提高摩擦纳米发电机（TENG）的输出性能至关重要。在本文中，我们设计了一种可行的方法，通过填充高介电常数纳米颗粒和形成孔来修饰TENG的摩擦材料。从实验和理论上讨论了介电性和孔隙率对摩擦材料输出性能的影响，表明表面电荷密度和电荷转移量与摩擦材料的相对介电常数和孔隙率有密切的关系。通过优化摩擦材料的介电性能和孔隙率，制备了一种基于复合海绵PDMS薄膜的高输出性能TENG （CS-TENG）。结合增强的介电常数和生产PDMS膜的孔隙,电荷密度的类似于19(2)数控厘米,开路电压338 V,和功率密度为6.47 W m(2)得到工作在2.5赫兹的频率优化电影组成的10% SrTiO3纳米颗粒(类似于大小100海里)和15%的孔隙体积,使5倍力量增强而王中林教授基于纯粹的PDMS膜。这项工作从材料的角度更好地理解了TENG产生的摩擦电，并为从材料本身而不仅仅是表面改性来提高TENG的性能提供了一种新的有效方法。
Understanding of the triboelectric charge accumulation from the view of materials plays a critical role in enhancing the output performance of triboelectric nanogenerator (TENG). In this paper, we have designed a feasible approach to modify the tribo-material of TENG by filling it with high permittivity nanoparticles and forming pores. The influence of dielectricity and porosity on the output performance is discussed experimentally and theoretically, which indicates that both the surface charge density and the charge transfer quantity have a close relationship with the relative permittivity and porosity of the tribo-material. A high output performance TENG based on a composite sponge PDMS film (CS-TENG) is fabricated by optimizing both the dielectric properties and the porosity of the tribo-material. With the combination of the enhancement of permittivity and production of pores in the PDMS film, the charge density of similar to 19 nC cm(-2), open-circuit voltage of 338 V, and power density of 6.47 W m(-2) are obtained at working frequency of 2.5 Hz with the optimized film consisting of 10% SrTiO3 nanoparticles (similar to 100 nm in size) and 15% pores in volume, which gives over 5-fold power enhancement compared with the nanogenerator based on the pure PDMS film. This work gives a better understanding of the triboelectricity produced by the TENG from the view of materials and provides a new and effective way to enhance the performance of TENG from the material itself, not just its surface modification.