图 1 - DDC-TENG 示意图
图 2 - DDC-TENG 的能源管理系统
随着香港能源危机意识的增强，再生绿色能源被提出作为政府的一个有前途的解决方案。在所有类型的能源中，由于香港水资源丰富，同时，香港位于亚洲南部，是一个多雨的城市。如果在下雨时可以收集雨滴的能量，那将更好地解决能源问题。
作为2012年提出的新型发电设备，摩擦奈米发电机(TENG)具有体积小、可携带的优点。 TENG可以在生活中的各种场景中收集能量。 TENG的原理是透过不同摩擦系数的材料的周期性接触分离或滑动来转移电荷产生电能，因此它通常表现为交流电。在使用过程中，通常需要连接整流器来直接为设备供电。这大大增加了便携设备的不便之处。受闪电现象的启发，我们设计了一种基于液滴的直流摩擦电奈米发电机(DDC-TENG)，不需要任何整流器。这种DDC-TENG利用水滴和摩擦电层之间产生的静电势，基于介电击穿机理，透过在摩擦电层和电极之间形成小间隙直接为电容器充电，而不需要整流器。
图 1 - DDC-TENG 示意图
图 2 - DDC-TENG 的能源管理系统
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As awareness of Hong Kong's energy crisis grows, renewable green energy is being proposed as a promising solution for the government. Among all types of energy, Hong Kong is rich in water resources. At the same time, Hong Kong is located in southern Asia and is a rainy city. If the energy of raindrops can be harvested when it rains, it will better solve the energy problem.
As a new power generation equipment proposed in 2012, the Triboelectric Nanogenerator (TENG) has the advantages of small size and portability. TENG can collect energy in various scenarios in life. The principle of TENG is to transfer charges to generate electrical energy through periodic contact separation or sliding of materials with different friction coefficients, so it usually behaves as an alternating current. During use, it is usually necessary to connect a rectifier to directly power the device. This greatly increases the inconvenience of portable devices. Inspired by the lightning phenomenon, a droplet-based direct current triboelectric nanogenerator (DDC-TENG) was designed that does not require any rectifier. This DDC-TENG utilizes the electrostatic potential generated between water droplets and the triboelectric layer, based on the dielectric breakdown mechanism, to directly charge the capacitor by forming a small gap between the triboelectric layer and the electrode, without the need for a rectifier.
Figure 1 - Scheme of DDC-TENG
Figure 2 - Power Management in DDC-TENG
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