Non-contact cylindrical rotating triboelectric nanogenerator for harvesting kinetic energy from hydraulics

Abstract

Hydraulics provide a unique and widely existed mechanical energy source around us, such as in water or oil pipes, and sewers. Here, a non-contact cylindrical rotating triboelectric nanogenerator (TENG) was developed to harvest the mechanical energy from water flows. Operation of the TENG was based on the non-contact free-rotating between a curved Cu foil and a flexible nanostructured fluorinated ethylene propylene (FEP) polymer film. The free-standing distance between two rotating interfaces avoided abrading of electrode materials. The TENG was able to effectively convert mechanical energy of the water flow into electricity. When driven by water flow, the output voltage and current of the TENG reached 1,670 V and 13.4 μA, respectively. Without any energy storage component, the produced electricity could instantaneously power 12 white light emitting diodes (LEDs) bulbs and a digital timer. This non-contact rotating TENG would provide new opportunities for harvesting energy from many types of hydraulics as a self-sustainable power source for sensing, detection, and protection.

Recent advances in hybrid perovskite nanogenerators

“…[84][85][86][87] Because of their numerous advantages of TENGs, such as broad material availability, cost-effectiveness, simple structure design, and high output efficiency, TENGs exhibit the great potential for the future development of wearable electronics, human-machine interface, and the Internet of Things. [88][89][90][91] Two different tribo-materials at the opposite ends of the triboelectric series are usually selected to construct TENGs for yielding higher outputs. From material point of view, many different factors can affect the electronegativity of tribomaterials.…”

“…Based on the triboelectric effect coupled with electrostatic induction, TENGs have been intensively explored in various application areas of flexible power sources and self‐powered environmental sensors 84‐87 . Because of their numerous advantages of TENGs, such as broad material availability, cost‐effectiveness, simple structure design, and high output efficiency, TENGs exhibit the great potential for the future development of wearable electronics, human‐machine interface, and the Internet of Things 88‐91 . Two different tribo‐materials at the opposite ends of the triboelectric series are usually selected to construct TENGs for yielding higher outputs.…”

Respiration‐driven triboelectric nanogenerators for biomedical applications

“…[9][10][11][12][13][14][15] The last decade has witnessed big advancements of TENG from a basic concept 16 to a well-established technology holding promises in a wide range of applications. [17][18][19][20][21][22][23][24] The broad selection of biocompatible materials, particularly those with a high flexibility and stretchability, for TENG designs is an essential advantage for biomedical applications. For instance, TENGs has been applied as active sensors for real-time healthcare monitoring through deciphering electrical signals into physiological information (eg, respiration, 25,26 heartbeats, 27,28 and blood pressure 29 ).…”

Piezoelectric sensor based on graphene-doped PVDF nanofibers for sign language translation

“…However, traditional piezoelectric sensor devices such as piezoelectric ceramics have disadvantages in detecting bending, and their detection stability and measurement range need to be improved [18,[42][43][44][45][46][47][48]. In the era of smart sensing, there is an increasing need for self-powered pressure and bending sensing systems [49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64].…”