论文标题
基于液滴的发电器的动力学
Dynamics for droplet-based electricity generators
论文作者
论文摘要
基于电气双层移动边界的基于液滴的电力发生器（DEG）的发现引发了极大的研究热情，并且最近实现了瞬时电力密度的突破。但是，这种基于液滴的发电机的动态机制仍然难以捉摸，阻碍了对实际应用的DEG的优化。通过全面的实验，我们开发了一个动态的表面电荷密度模型，该模型可以解释DEG的潜在机制。与顶部电极接触的散布液滴可以被视为DEG电容器顶部板的附加部分，而液滴面积的变化会导致板的表面电荷密度的变化，从而驱动电子在两个板之间迁移。动态机制的见解铺平了一种最佳设计和实际应用的方式
The finding of droplet-based electricity generator (DEG), based on the moving boundary of electrical double layer, has triggered great research enthusiasm, and a breakthrough in instantaneous electric power density was achieved recently. However, the dynamic mechanism for such droplet-based electricity generators remains elusive, impeding optimization of the DEG for practical applications. Through comprehensive experiments, we developed a dynamic model of surface charge density that can explain the underlying mechanism for the DEGs. The spreading droplet in touch with the top electrode can be equivalently regarded as an additional part of the top plate of the DEG capacitor, and the change of droplet area causes the change of surface charge density of the plates, driving electrons to migrate between the two plates. The insight of the dynamic mechanism paves a way for optimal design and practical applications of DEGs
