Journal
NANO ENERGY
Volume 107, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.nanoen.2022.108130
Keywords
Triboelectric nanogenerator; Energy harvesting; Discharge; Spring
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A portable multipillar TENG (PMP-TENG) with conductive springs is developed in this study, which can provide amplified output and high frequency while preventing damage and noise. It has great value for the application of portable devices.
With the extensive use of small portable electronics in digital healthcare, the triboelectric nanogenerator (TENG), which can convert mechanical energy into electricity, has been developed for these portable electronics. How-ever, the high mechanical input power for TENG performance improvement causes constant damage and excessive noise, which can make applying portable devices in daily life inconvenient. Nevertheless, the TENG electrical limitation, generating a low current output as nanoampere to microampere, still is not overcome. In this study, a portable multipillar TENG (PMP-TENG) with conductive springs can provide amplified output, developed mechanical characteristics simultaneously. When a moving electrode with a surface charge contacts the springs, the PMP-TENG continuously generates a high discharge output and increases the output frequency through the elastic force of the spring. In addition, the spring can prevent crack damage and harmful noise via shock absorption of the moving electrode. During the PMP-TENG operating mechanical input of 2.5 Hz, the average peak voltage, current is 165 V, 34 mA, respectively. The PMP-TENG is used to charge small electronics or power warning lights in portable devices during human motion, such as walking, running, and jumping, increasing its advantages.
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