Zhongyuan University of Technology, Zhengzhou, Henan, 450007, China.
Institute of Nanoscience and Nanotechnology, Lanzhou University, Gansu, 730000, China.
Nat Commun. 2018 Sep 14;9(1):3773. doi: 10.1038/s41467-018-06045-z.
Charge density is one of the most important parameters of triboelectric nanogenerators since it directly determines performance; unfortunately, it is largely restricted by the phenomenon of air breakdown. Here, we design a self-improving triboelectric nanogenerator with improved charge density. A maximum effective charge density of 490 μC m is obtained, which is about two times higher than the highest reported charge density of a triboelectric nanogenerator that operates in an air environment. At the beginning of the working process, the charge accumulation speed is increased 5.8 times in comparison with a triboelectric nanogenerator that is incorporated into the self-improving device. The self-improving triboelectric nanogenerator overcomes the restriction of air breakdown and exhibits an increased effective charge density, which contributes to the improvement of the output performance, and the increase of charge accumulation speed will accelerate the increase of the output power at the start of operation.
电荷密度是摩擦起电纳米发电机最重要的参数之一，因为它直接决定了性能；不幸的是，它受到空气击穿现象的极大限制。在这里，我们设计了一种具有改进电荷密度的自增强摩擦起电纳米发电机。获得了最大有效电荷密度为 490μC m，比在空气环境中工作的摩擦起电纳米发电机的最高报告电荷密度高约两倍。在工作过程的开始时，与包含在自增强装置中的摩擦起电纳米发电机相比，电荷积累速度增加了 5.8 倍。自增强摩擦起电纳米发电机克服了空气击穿的限制，表现出增加的有效电荷密度，这有助于提高输出性能，而电荷积累速度的增加将加速运行开始时输出功率的增加。
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