A humidity-enhanced silicon-based semiconductor tribovoltaic direct-current nanogenerator

Wang, Zhaozheng; Gong, Likun; Dong, Sicheng; Fan, Beibei; Feng, Yuan; Zhang, Zhi; Zhang, Chi

doi:10.1039/d2ta07637c

Cited by 15 publications

(26 citation statements)

References 49 publications

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“…42 Fig. 6 in detail evaluates various DC-TENG devices based on six different parameters, including current density, 5,[8][9][10]16,18,20,22,24,[43][44][45] peak power density, 5,8,9,[16][17][18]22,24,[43][44][45][46] open-circuit voltage, 5,8,16,18,20,21,24,34,35,39,44,[47][48][49] short-circuit current, 5,8,10,11,16,18,20,21,24,34,35,39,…”

Section: Typical Output Parameters Of Dc-tengsmentioning

confidence: 99%

“…The work functions of different semiconductors vary with the doping types and doping concentrations. Even the same type of 5,8,9,[16][17][18]22,24,[43][44][45][46] (c) Open-circuit voltage. 5,8,16,18,20,21,24,34,35,39,44,[47][48][49] (d) Short-circuit current.…”

Section: Semiconductorsmentioning

confidence: 99%

“…This research provides an effective method to boost the output performance of DC-TENGs, presenting the great potential of DC-TENGs for energy-harvesting applications in a high humidity environment (e.g., oceans, rain, etc.). 46 In brief, the influence of external factors on DC-TENGs can be represented as follows. First, higher frictional speed and larger load pressure can increase the output voltage.…”

Section: Humiditymentioning

confidence: 99%

“…85,[94][95][96] For energy harvesting, the harvested electrical energy by DC-TENGs can directly and continuously charge capacitors. 8,44,46 Multisource energy harvesting not only includes photonic energy, thermal energy, wind energy, and mechanical energy, but also has the multiphysics coupling effect of combined energy forms. 58,81,85 For wearable devices, the dynamic Schottky junction DC-TENGs based on an Al slider and a poly (3,4-ethylenedioxythiophene)coated textile are demonstrated to be used for flexible wearable products.…”

Section: Applicationsmentioning

confidence: 99%

“…The statistical distributions of recently published research articles on DC-TENGs by different institutions are also shown in Fig. 12l and m. 8,[16][17][18][21][22][23][24]34,[44][45][46]58,81,85 Although the number of articles is not particularly high, the literature investigation can indicate which application areas are currently relatively well researched and which are relatively blank. It can be used to guide related research in the future, which is important to promote multidisciplinary investigation on DC-TENGs.…”

Section: Applicationsmentioning

confidence: 99%

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Section: Typical Output Parameters Of Dc-tengsmentioning

confidence: 99%

Section: Semiconductorsmentioning

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Section: Humiditymentioning

confidence: 99%

Section: Applicationsmentioning

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Tribovoltaic Effect: Origin, Interface, Characteristic, Mechanism & Application

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Tribovoltaic effect is a phenomenon of the generation of direct voltage and current by the mechanical friction on semiconductor interface, which exhibits a brand‐new energy conversion mechanism by the coupling of semiconductor and triboelectrification. Here, the origin, interfaces, characteristics, mechanism, coupling effect and application of the tribovoltaic effect is summarized and reviewed. The tribovoltaic effect is first proposed in 2019, which has developed in various forms tribovoltaic nanogenerator (TVNG) including metal‐semiconductor, metal‐insulator‐semiconductor, semiconductor‐semiconductor, liquid‐solid and flexible interfaces. Compared with triboelectric nanogenerator, the TVNG has the characteristics of direct‐current, high current density (mA‐A cm−2) and low impedance (Ω‐kΩ). The two mainstream views on the tribovoltaic generation mechanism, one dominated by built‐in electric fields and the other dominated by interface electric fields, have been elaborated and summarized in detail. The tribo‐photovoltaic effect and tribo‐thermoelectric effect are also discovered and introduced because they can easily interact with other multi‐physical field effects. The TVNGs are suitable for making energy harvesting and self‐powered sensing devices for micro‐nano energy applications. This paper not only revisit the development of the tribovoltaic effect, but also makes prospects for mechanism research, device fabrication and integrated application, which can accelerate the evolution of smart wearable electronics and intelligent industrial components.

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Synergistic Coupling of Tribovoltaic and Moisture‐Enabled Electricity Generation in Layered‐Double Hydroxides

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Choi,

et al. 2024

Advanced Energy Materials

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Ubiquitous energy harvesting technologies require new types of renewable, sustainable, and clean energy to solve the problems of fossil fuels. Although various nanogenerators have been developed over the last decade, low current density, requirements for complicated management circuits, generation of direct current (DC) outputs, and significant performance degradation under humid atmospheres have been problems limiting practical applications. This paper reports that the tribovoltaic and moisture‐enabled electricity generation effects can be achieved in a layered double hydroxide (LDH) by applying a metal brushing mode. The ZnAl‐LDH shows enhanced tribovoltaic nanogenerator (TVNG) performance even in a high‐humidity environment coupled with the moisture‐enabled electricity generated by the concentration gradient of a water molecule through the interlamellar structures of the LDHs. The spontaneous dissociation of water in the interior of LDHs removes the hole generated by the tribovoltaic effect, allowing high efficiency of an output voltage of 693.38 mV and current density of 65.48 mA m−2 even under low‐applied force (≈3.5 mN) at relative humidity 80%. The proposed TVNG provides a proof of concept for an all‐in‐one device consisting of a generator and capacitor because the LDH reveals a spontaneous charging performance similar to that of a capacitor.

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A humidity-enhanced silicon-based semiconductor tribovoltaic direct-current nanogenerator

Abstract: The triboelectric nanogenerator (TENG) which could convert the mechanical energy into electrical energy has arisen worldwide attentions in energy harvesting and the Internet of Things (IoTs). However, the extreme performance...

Cited by 15 publications

References 49 publications

Pursuing the tribovoltaic effect for direct-current triboelectric nanogenerators

Pursuing the tribovoltaic effect for direct-current triboelectric nanogenerators

Tribovoltaic Effect: Origin, Interface, Characteristic, Mechanism & Application

Synergistic Coupling of Tribovoltaic and Moisture‐Enabled Electricity Generation in Layered‐Double Hydroxides

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