【摘要】 为改善摩擦纳米发电机摩擦材料的环境友好性,选用生物基聚酰胺和聚乳酸分别作为正负摩擦电材料,采用流延成膜、去离子水浸出、静电纺丝法分别制备了各种表面形态的膜,并探究其表面微观结构对纳米发电机输出性能的影响。试验结果表明:静电纺丝纤维膜的表面微纳结构有利于电荷的积累,输出性能最佳,同时在试验过程中材料的化学性质并未发生改变;制备厚度15μm、接触面积2 cm×2 cm的纳米发电机在频率3 Hz、作用力7.5 N条件下,开路电压、短路电流、电荷转移量可以达到79 V、1.5μA、6.7 n C;器件在7 200个工作循环后输出性能无明显变化,且能在30%～50%相对湿度条件下保持稳定输出。更多还原

【Abstract】 In order to improve the environmental friendliness of friction materials for triboelectric nanogenerator, biological polyamide and polylactic acid are selected as positive and negative friction materials, and films with various surface morphologies are prepared by tape casting, deionized water leaching, and electrospinning, respectively. The influence of their surface microstructure on the output performance of triboelectric nanogenerator is investigated. The results show that the micro nano structure on the surface of electrospun fiber membrane is conducive to charge accumulation, and the output performance is the best. At the same time, the chemical properties of the material have not changed during the test. When the thickness of the triboelectric material is 15 μm, contact area is 2 cm×2 cm, the output performance of triboelectric nanogenerator containing open circuit voltage, short circuit current and charge transfer could reach 79 V, 1. 5 μA and 6. 7 n C under the frequence of 3 Hz and the force of 7. 5 N. The output performance of the device has no obvious change after 7200 working cycles,and the device can maintain stable output under relative humidity of 30%～50%.更多还原