Open AccessDynamical charge transfer for high‐performance triboelectric nanogenerators
Author(s) -
Cui Xin,
Zhang Yan
Publication year - 2020
Publication title -
nano select
Language(s) - English
Resource type - Journals
ISSN - 2688-4011
DOI - 10.1002/nano.202000084
Subject(s) - triboelectric effect , charge (physics) , electret , electrostatic induction , charge density , materials science , surface charge , optoelectronics , physics , electrode , quantum mechanics , composite material
Triboelectric nanogenerators (TENGs) provide the most effective technology for using distributed mechanical energy to power distributed sensor networks. Improving the surface charge density is important to optimizing the performance of TENGs. Unlike electrets with steady‐state charges, there is a changing charge–discharge process in the working cycle for materials for TENGs. This article reviews several mechanisms to improve surface charge density by using decay coefficient, transfer time, and effective charge. These mechanisms decouple the physical quantities of charge decay and charge accumulation processes toward higher surface charge density. We also briefly discuss new strategies for improving surface charge density.