A United Triboelectrification Mechanism for Contacts between All Types of Materials

Author:

Wang Haobin12,Huang Shuyi3,Kuang Haoze12,Zhang Chi12,Liu Yulu12,Zhang Kaihang12,Cai Xinyu12,Wang Xiaozhi12ORCID,Luo Jikui12ORCID,Wang Zhong Lin4ORCID

Affiliation:

1. Key Laboratory of Micro‐nano Electronic Devices and Smart Systems of Zhejiang Province College of Information Science and Electronic Engineering Zhejiang University Hangzhou 310027 China

2. International Joint Innovation Center Zhejiang University Haining 314400 China

3. Shanghai Precision Metrology and Test Research Institute 3888 Yuanjiang Road Shanghai 201109 China

4. Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Beijing 100083 China

Abstract

AbstractTriboelectrification for contacts between three types of materials—metals, polymers, and semiconductors—are investigated. The results show that triboelectrification is a charge exchange process between the surfaces of two friction materials, and its output is the synergetic effects of the electrostatic induction (ESI) and dynamic junction modulation (DJM). There are four current/voltage peaks in output of triboelectrification: two of them are attributed to the ESI effect and determined by the surface state densities and electron affinity difference of the materials, while the other two are associated with the DJM effect and determined by the charging exchange between the surface states and the depletion region. However, metals and polymers have no‐modulation of depletion region due to their high conductivity and insulating nature, respectively, thus only two peaks induced by the ESI effect are observable no matter what types of metals and polymers are in pair for contacting. Semiconductors have a depletion region, there will be two more output current/voltage peaks induced by the junction modulation when a semiconductor is in contact with any type of materials. The observations reveal a universal triboelectrification mechanism for contacts between materials, and provide an intuitive guidance for the development of high‐performance triboelectric nanogenerators.

Funder

National Natural Science Foundation of China

Publisher

Wiley

Subject

General Materials Science,Renewable Energy, Sustainability and the Environment

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