Abstract
Since the triboelectric nanogenerator (TENG) was invented, it has received extensive attention from researchers. Among the many pieces of research based on TENG, the research of hybridized generators is progressing rapidly. In recent years, the research and application of the electromagnetic–triboelectric hybridized nanogenerator (EMG-TENG) have made great progress. This review mainly focuses on the latest research development of EMG-TENG and elaborates on the principles, materials, structure, and applications of EMG-TENG. In this paper, the microscopic charge transfer mechanism of TENG is explained by the most primitive friction electrification phenomenon and electrostatic induction phenomenon. The commonly used materials for fabricating TENG and the selection and modification methods of the materials are introduced. According to the difference in structure, EMG-TENG is divided into two categories: vibratory EMG-TENG and rotating EMG-TENG. The summary explains the application of EMG-TENG, including the energy supply and self-powered system of small electronic devices, EMG-TENG as a sensor, and EMG-TENG in wearable devices. Finally, based on summarizing previous studies, the author puts forward new views on the development direction of EMG-TENG.
Highlights
Electrical energy has become indispensable energy in human production and life since Michael Faraday invented the phenomenon of electromagnetic induction in 1831
The Principle of Electromagnetic–Triboelectric Hybridized Generators This section is divided into three parts, which introduce the mechanism of t tromagnetic generator (EMG), the mechanism of the triboelectric nano-generator (
The electromagnetic–triboelectric hybridized nanogenerator (EMG-triboelectric nano-generator (TENG)) is a device for scavenging mechanical energy invented by combining an electromagnetic generator and a triboelectric nanogenerator
Summary
Electrical energy has become indispensable energy in human production and life since Michael Faraday invented the phenomenon of electromagnetic induction in 1831. This invention converts tiny mechanical energy into electrical energy for the first time, opening the door for human beings to understand micro-nano energy [27] This kind of generator can only obtain an output power of ~0.5 pW. The generator uses the triboelectric effect between a PET (polyester) substrate and a Kapton film with a nanosurface to accumulate an electric charge, and through the electrostatic induction between the friction material and the metal electrode on its back, the generator successfully harvests mechanical energy and outputs it into electric energy This generator can provide a 3.3 V output voltage and ~10.4 mW power density. The Principle of Electromagnetic–Triboelectric Hybridized Generators This section is divided into three parts, which introduce the mechanism of t tromagnetic generator (EMG), the mechanism of the triboelectric nano-generator (
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