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Mechanism and optimum pressure for sliding-mode nanogenerator

Yun Hang, He Ren

Polish Journal of Chemical Technology

2023

Vol. 25, nr 1

35--39

Triboelectric nanogenerator has extensive applicability because of its capability of harvesting mechanical energy and flexible working modes. To research the optimum pressure and improve the recovered energy of the sliding-mode triboelectric nanogenerator, a contact model of the Al/PTFE tribo-pair is studied by ab initio calculation and finite element simulation. The F-atom of PTFE is proved to be the electron accepter and the charges transferred can be predicted by Bader charge analysis. The mathematical relation between interfacial distance, charges transferred and contact pressure can be fitted. By Gauss’s law, the electric field is simulated and the regeneration energy of the sliding-mode triboelectric nanogenerator can be evaluated by the total electric energy and friction loss. Finally, an optimum pressure can be set to the upper or lower limit of working pressure corresponding to larger recovered energy. And less friction coefficient and larger contact area are also effective methods for recovering energy.

Methodology of stand tests on the selection of high energy materials for the construction of a tribogenerator

Deliś M., Białecki T., Giemza B., Domański M., Kapica D., Kulczycki A.

Journal of KONBiN

2018

No. 48

543--557

The topic of developing a methodology and a stand test for the evaluation of materials intended for the construction of tribogenerators has been actualized in this article. The proposed method concerns the use of sliding friction in the course of which the mechanical energy is converted into electric energy using the triboelectric and electrostatic effect. The stand test scheme and research methodology are discussed. A preliminary study of friction pairs was carried out, proving the effectiveness of the methodology.

W artykule opisano metodykę i stanowisko do oceny materiałów przeznaczonych do budowy tribogeneratorów. Zaproponowana metoda dotyczy przypadku wykorzystania tarcia ślizgowego, w trakcie którego energia mechaniczna zamienia jest na energię elektryczną z wykorzystaniem efektu tiboelektrycznego i elektrostatycznego. Omówiono schemat budowy stanowiska oraz metodykę badań. Przeprowadzono wstępne badania par ciernych, udowadniając skuteczność metodyki.