On the Electron‐Transfer Mechanism in the Contact‐Electrification Effect

  title={On the Electron‐Transfer Mechanism in the Contact‐Electrification Effect},
  author={Cheng Xu and Yunlong Zi and Aurelia Chi Wang and Haiyang Zou and Yejing Dai and Xu He and Peihong Wang and Yi-Cheng Wang and Peizhong Feng and Da-wei Li and Zhong Lin Wang},
  journal={Advanced Materials},
A long debate on the charge identity and the associated mechanisms occurring in contact‐electrification (CE) (or triboelectrification) has persisted for many decades, while a conclusive model has not yet been reached for explaining this phenomenon known for more than 2600 years! Here, a new method is reported to quantitatively investigate real‐time charge transfer in CE via triboelectric nanogenerator as a function of temperature, which reveals that electron transfer is the dominant process for… 

Electron Transfer in Nanoscale Contact Electrification: Effect of Temperature in the Metal–Dielectric Case

A thermionic-emission band-structure model is proposed to describe the electron transfer between two solids at different temperatures and suggests that CE can occur between two identical materials owing to the existence of a local temperature difference arising from the nanoscale rubbing of surfaces with different curvatures/roughness.

Unraveling Temperature‐Dependent Contact Electrification between Sliding‐Mode Triboelectric Pairs

The underlying mechanism on contact electrification (CE) has remained a topic of debate over centuries, and it is argued to be due to electron transfer, ion transfer, and/or even material species

Probing Contact‐Electrification‐Induced Electron and Ion Transfers at a Liquid–Solid Interface

It is demonstrated that electron transfer plays the dominant role during CE between liquids and solids, which directly impacts the traditional understanding of the formation of an electric double layer at a liquid-solid interface in physical chemistry.

Electron Transfer in Nanoscale Contact Electrification: Photon Excitation Effect

The results suggest that there exists a threshold photon energy for releasing the triboelectric charges from the surface, which is 4.1 eV, and a photoelectron emission model is proposed to describe light-induced charge decay on a dielectric surface.

The electron transfer dynamics in the contact electrification and its effects on the intensity of triboluminescence

With the growing threat of energy crisis and the increasing need to power microelectronic devices, people are seeking potential alternative energies that can replace the conventional sources such as

Effects of Metal Work Function and Contact Potential Difference on Electron Thermionic Emission in Contact Electrification

Triboelectric nanogenerator (TENG) is a direct measure of the surface charge density, thus providing a novel and powerful tool to study the essential mechanism of contact electrification (CE). A



Electrostatic electrochemistry at insulators.

Electrostatic charges on Teflon produced by rubbing with Lucite were directly identified as electrons rather than ions by electrochemical (redox) experiments with charged Tflon used as a single electrode in solution causing various chemical reactions.

Contact electrification of insulating materials

The electrostatic charge that is generated when two materials are contacted or rubbed and then separated is a well-known physical process that has been studied for more than 2500 years. Contact

Manipulating nanoscale contact electrification by an applied electric field.

The modulation effect of the electric field on contact electrification is enhanced for a thinner dielectric layer and can potentially be utilized to enhance the output performance of energy harvesting devices or nullify contact electric charge transfer in applications where this effect is undesirable.

Contact electrification induced by monolayer modification of a surface and relation to acid–base interactions

ELECTRICAL charge separation following contact between two materials (contact electrification or the triboelectric effect) is well known to occur between different materials as a consequence of their

Electrostatic charging due to separation of ions at interfaces: contact electrification of ionic electrets.

This Review proposes--as a still-unproved hypothesis--that this ion-transfer mechanism may also explain the ubiquitous contact electrification ("static electricity") of materials, such as organic polymers, that do not explicitly have ions at their surface.

Ionic electrets: electrostatic charging of surfaces by transferring mobile ions upon contact.

The fabrication and characterization of ionic electrets-materials that bear a long-lived electrostatic charge because of an imbalance between the number of cationic and anionic charges are described.

Temperature Effect on Performance of Triboelectric Nanogenerator

The triboelectric nanogenerator (TENG) is a promising energy harvesting technology that can convert mechanical energy into electricity and can be used as self‐powered active sensors. However,

The Volta effect as a cause of static electrification

  • W. R. Harper
  • Physics
    Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences
  • 1951
An experimental investigation of the static electrification of metal/metal surfaces shows that the erratic results normally obtained are owing to there being more than one cause, and that the

The absence of redox reactions for palladium(II) and copper(II) on electrostatically charged Teflon: relevance to the concept of "cryptoelectrons".

Direct evidence is provided, based on X-ray photoelectron spectroscopy (XPS), that the surface charge created on these surfaces does not reduce copper and palladium ions, and instead, rubbing Teflon with PMMA causes material exchange and promotes adsorption of copper ions from aqueous solutions onto the rubbed Tflon; this process can be misinterpreted as an electrochemical reduction.