Triboelectric-piezoelectric-electromagnetic hybrid nanogenerator for high-efficient vibration energy harvesting and self-powered wireless monitoring system
Triboelectric-piezoelectric-electromagnetic hybrid nanogenerator for high-efficient vibration energy harvesting and self-powered wireless monitoring system
复制标题
用于高效振动能量收集和自供电无线监测系统的摩擦电-压电-电磁混合纳米发电机
DOI：
10.1016/j.nanoen.2017.11.039
复制
发表时间：
2018-01-01
期刊：
影响因子：
17.6
通讯作者：
Xue, Chenyang
中科院分区：
文献类型：
--
作者：
He, Jian;Wen, Tao;Xue, Chenyang
能量收集是无线传感器网络和移动的终端实现自供电模式的关键技术。已经开发了大量的装置来将机械能转换成电能。虽然已经做出了很大的努力，以提高输出性能，像能量耗散，器件寿命和响应范围的问题仍然需要解决。在这里，我们报告了一个混合的摩擦电-压电-电磁纳米发电机有效地收集振动能量。三种收获模式集成到一个设备中，其核心部件是磁悬浮结构。一方面，由于能量损失低，它比传统的弹簧或悬臂设计具有更高的灵敏度，这有利于像拍打桌子振动和运行汽车振动这样的微小能量收集。另一方面，通过特殊的结构设计，可以避免机械疲劳或损坏。在20 Hz下，摩擦电纳米发电机（TENG）可以提供78.4 μ W的峰值输出功率，而顶部（EMG 2）和底部（EMG 1）电磁发电机分别可以提供36 mW和38.4 mW的峰值输出功率。位于顶部（PEG 2）和底部（PEG 1）的压电发电机可以分别贡献122 mW和105 mW的峰值输出功率。电容充电测试结果表明，TENG + EMG 1 + EMG 2 + PEG 1 + PEG 2组合的能量收集能力最强，单位组合的能量收集能力明显强于个体。最后，该装置已被集成到一个无线传感器系统。结果表明，该无线传感器系统能够被激活，并将温度和振动信号传输到控制计算机。该工作对物联网的发展和应用具有重要意义。
Energy harvesting is a key technology for the self-powered mode of wireless sensor nods and mobile terminals. A large number of devices have been developed to convert mechanical energy into electrical energy. Whereas great efforts have been made to improve the output performance, problems like energy dissipation, device life and response range still need to be addressed. Herein, we report a hybridized triboelectric-piezoelectric-electromagnetic nanogenerator efficiently harvesting vibration energy. Three harvest modes are integrated into a single device, whose core component is a magnetic levitation structure. On the one hand, it presents higher sensitivity than conventional spring or cantilever designs due to low energy loss, which favors the tiny energy harvesting like the slapping desk vibration and the running car vibration. On the other hand, the mechanical fatigue or damage can be avoided by the special structure design. Under 20 Hz, triboelectric nanogenerator (TENG) can deliver a peak output power of 78.4 mu W, while the top (EMG2) and the bottom (EMG1) electromagnetic generator can provide a peak output power of 36 mW and 38.4 mW, respectively. Piezoelectric generator located at top (PEG2) and bottom (PEG1) can contribute a peak output power of 122 mW and 105 mW, respectively. The capacitor charge measurement reveals that unit combination performance is remarkably stronger than individual performance, and the combination of TENG + EMG1 + EMG2 + PEG1 + PEG2 has the highest energy harvesting capacity. Finally, this device has been integrated into a wireless sensor system. Results show that the wireless sensor system can be activated and transmit temperature and vibration signal to control computer. This work has a vital significance to the development and application of the internet of things.