Elastic spiral triboelectric nanogenerator as a self-charging case for portable electronics

Nonpolar Liquid Lubricant Submerged Triboelectric Nanogenerator for Current Amplification via Direct Electron Flow

“…[6] Despite these advantages, recent studies have highlighted certain limitations of the high surface potential, which may lead to an air breakdown [7] and low current output generation. [8] Notably, a typical TENG structure consists of an electrode and dielectric layer that exhibit relative motion, [9] and the corresponding phenomena may result in the air breakdown and low current output. [8] To alleviate the electrical problems, certain researchers recommended strategies such as changing the ambient environment, [10] utilizing a liquid to suppress air breakdown, [11] and inducing micro plasma to ensure a high electric current.…”

Triangulated Cylinder Origami-Based Piezoelectric/Triboelectric Hybrid Generator to Harvest Coupled Axial and Rotational Motion

“…Notably, piezoelectric nanogenerators (PENGs) and triboelectric nanogenerators (TENGs), which utilize the polarization-induced current to produce electricity, are representative technologies for harvesting mechanical energy [ 12 – 15 ]. These two generators exhibit distinctive advantages such as a low weight, high electric output, and possibility of customizing the device design [ 16 – 20 ]. To produce a larger amount of electrical energy from a limited mechanical input, piezoelectric/triboelectric hybrid generators, which exhibit higher energy conversion efficiency, have been developed [ 19 , 21 – 23 ].…”

A portable device for water-sloshing-based electricity generation based on charge separation and accumulation

“…With the advancement of the Internet of things, which relies on small/thin electronics or self-powered sensors, researchers are attempting to ensure a balance between the portability and electrical output of energy harvesters. Furthermore, various energy harvesters that use the electrokinetic effect ( Duffin and Saykally, 2008 ; Koranlou et al., 2019 ) or triboelectrification ( Kim et al., 2018a , 2019 ; Zhu et al., 2012 ; Fan et al., 2012 ; He et al., 2017 ) techniques have been developed to generate the electric power necessary to power small electronics. Among such devices, triboelectrification-based electricity generators, which are made of lightweight materials and can produce a high electrical output, have demonstrated potential to function as auxiliary power sources of small electronic devices or self-powered sensors ( Wang, 2017 ; Chung et al., 2019 ; Hwang et al., 2019 ; Meng et al., 2013 ; Kim et al., 2019 ).…”