Triboelectric–Electromagnetic Hybrid Generator for Harvesting Blue Energy

Huiyun Shao, Ping Cheng, Ruixuan Chen, Lingjie Xie, Na Sun, Qingqing Shen, Xiaoping Chen, Qianqian Zhu, Yi Zhang, Yina Liu, Zhen Wen*, Xuhui Sun

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

93 Citations (Scopus)

Abstract

Progress has been developed in harvesting low-frequency and irregular blue energy using a triboelectric–electromagnetic hybrid generator in recent years. However, the design of the high-efficiency, mechanically durable hybrid structure is still challenging. In this study, we report a fully packaged triboelectric–electromagnetic hybrid generator (TEHG), in which magnets were utilized as the trigger to drive contact–separation-mode triboelectric nanogenerators (CS-TENGs) and coupled with copper coils to operate rotary freestanding-mode electromagnetic generators (RF-EMGs). The magnet pairs that produce attraction were used to transfer the external mechanical energy to the CS-TENGs, and packaging of the CS-TENG part was achieved to protect it from the ambient environment. Under a rotatory speed of 100 rpm, the CS-TENGs enabled the TEHG to deliver an output voltage, current, and average power of 315.8 V, 44.6 μA, and ~ 90.7 μW, and the output of the RF-EMGs was 0.59 V, 1.78 mA, and 79.6 μW, respectively. The cylinder-like structure made the TEHG more easily driven by water flow and demonstrated to work as a practical power source to charge commercial capacitors. It can charge a 33 μF capacitor from 0 to 2.1 V in 84 s, and the stored energy in the capacitor can drive an electronic thermometer and form a self-powered water-temperature sensing system.

Original languageEnglish
Article number54
JournalNano-Micro Letters
Volume10
Issue number3
DOIs
Publication statusPublished - 1 Jul 2018

Keywords

  • Electromagnetic generator
  • Hybrid generator
  • Power source
  • Triboelectric nanogenerator
  • Water flow

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