School of Material Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332-0245, United States.
ACS Nano. 2014 Jul 22;8(7):7442-50. doi: 10.1021/nn502684f. Epub 2014 Jun 16.
The recently introduced triboelectric nanogenerator (TENG) and the traditional electromagnetic induction generator (EMIG) are coherently integrated in one structure for energy harvesting and vibration sensing/isolation. The suspended structure is based on two oppositely oriented magnets that are enclosed by hollow cubes surrounded with coils, which oscillates in response to external disturbance and harvests mechanical energy simultaneously from triboelectrification and electromagnetic induction. It extends the previous definition of hybrid cell to harvest the same type of energy with multiple approaches. Both the sliding-mode TENG and contact-mode TENG can be achieved in the same structure. In order to make the TENG and EMIG work together, transformers are used to match the output impedance between these two power sources with very different characteristics. The maximum output power of 7.7 and 1.9 mW on the same load of 5 kΩ was obtained for the TENG and EMIG, respectively, after impedance matching. Benefiting from the rational design, the output signal from the TENG and the EMIG are in phase. They can be added up directly to get an output voltage of 4.6 V and an output current of 2.2 mA in parallel connection. A power management circuit was connected to the hybrid cell, and a regulated voltage of 3.3 V with constant current was achieved. For the first time, a logic operation was carried out on a half-adder circuit by using the hybrid cell working as both the power source and the input digit signals. We also demonstrated that the hybrid cell can serve as a vibration isolator. Further applications as vibration dampers, triggers, and sensors are all promising.
最近引入的摩擦电纳米发电机（TENG）和传统的电磁感应发电机（EMIG）在一个结构中协同集成，用于能量收集和振动传感/隔离。悬浮结构基于两个相对取向的磁铁，这些磁铁被空心立方体包围，立方体周围环绕着线圈，这些磁铁在外部干扰下振荡，并同时从摩擦起电和电磁感应中收集机械能。它扩展了之前的混合电池定义，以通过多种方法来收集相同类型的能量。在同一结构中可以实现滑动模式 TENG 和接触模式 TENG。为了使 TENG 和 EMIG 一起工作，使用变压器来匹配这两种具有非常不同特性的电源之间的输出阻抗。经过阻抗匹配，在相同的 5 kΩ负载下，TENG 和 EMIG 的最大输出功率分别为 7.7 和 1.9 mW。由于合理的设计，TENG 和 EMIG 的输出信号同相。它们可以直接相加，以获得并联连接时 4.6 V 的输出电压和 2.2 mA 的输出电流。一个功率管理电路连接到混合电池上，实现了 3.3 V 的稳压恒流。首次使用混合电池作为电源和输入数字信号，在半加法器电路上进行了逻辑运算。我们还证明了混合电池可用作振动隔离器。作为减振器、触发器和传感器的进一步应用都很有前景。
