Ultrahigh charge density realized by charge pumping at ambient conditions for triboelectric nanogenerators

By Liang Xu, Tian Zhao Bu, Xiao Yang, Chi Zhang, Zhong Lin Wang. Nano Energy, 2018

307 citations recorded by the source corpus.

Abstract As a promising technology to harvest mechanical energy from environment, triboelectric nanogenerators (TENGs) impose great importance to further enhance the power density, which is closely related to the charge density on the dielectric surface. A few approaches have been proposed to meet the challenge to improve the charge density, while certain preconditions restrict their applications. Here, a facile and universal method using floating layer structure and charge pump is proposed, based on which an integrated self-charge-pumping TENG device is fabricated. The device adopts a floating layer to accumulate and bind charges for electrostatic induction, while a charge pump is devised to pump charges into the floating layer simultaneously. With elaborately designed structures, this device can achieve ultrahigh effective surface charge density of 1020 μC m−2 in ambient conditions, which is 4 times of that of the density corresponding to air breakdown, presenting a simple and robust strategy to greatly enhance the output of TENGs which should be crucial for developing high performance energy harvesting devices and self-powered systems.

Subfields: Biomedical Engineering, Mechanical Engineering, Polymers and Plastics

View Paper: https://www.semanticscholar.org/paper/c23da27393e64df326d874e9e1d0b247461524c6

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Biomedical Engineering

1. Long Liu
2. Xinge Guo
3. S. R. P. Silva
4. Chengkuo Lee
5. R. Dharmasena
6. Zhou Li
7. Minyi Xu
8. Xiu Xiao

In Mechanical Engineering

1. Long Liu
2. Xinge Guo
3. Chengkuo Lee
4. R. Dharmasena
5. S. R. P. Silva
6. Zhou Li
7. Minyi Xu
8. Xiu Xiao

In Polymers and Plastics

1. S. R. P. Silva
2. R. Dharmasena
3. Long Liu
4. Chengkuo Lee
5. Xinge Guo
6. Zhou Li
7. Minyi Xu
8. Xiu Xiao

Citations in the corpus

• Promoting smart cities into the 5G era with multi-field Internet of Things (IoT) applications powered with advanced mechanical energy harvesters (2021, background): “Additionally, with structure design like switches [91,92], charge pumping [93 – 95], and hybridized nanogenerators [17,96 – 99], the outputs also can be maximized and managed.”
• Recent progress in blue energy harvesting for powering distributed sensors in ocean (2021, background): “Recently, researchers are increasingly inclined to develop novel harvesters that are low-cost, long-lived, environmentally friendly, and corrosion resistant [70, 163-180].”
• Towards optimized triboelectric nanogenerators (2019, methodology): “A novel approach has been suggested where two TENGs are used in tandem, acting as a floating layer 349 structure and a charge pump (Fig 6d) [100], reporting an output charge density of 1020 μC/m(2) in ambient 350 conditions.”