Matching the Directions of Electric Fields from Triboelectric and Ferroelectric Charges in Nanogenerator Devices for Boosted Performance

Summary Embedding additional ferroelectric dipoles in contacting polymer layers is known to enhance the performance of triboelectricnanogenerator (TENG) devices. However, the influence of dipoles formed between the triboelectric surface charges on two contacting ferroelectric films has been ignored in all relevant studies. We demonstrate that proper attention to the alignment of the distinct dipoles present between two contacting surfaces and in composite polymer/BaTiO3 ferroelectric films can lead to up to four times higher energy and power density output compared with cases when dipole arrangement is mismatched. For example, TENG device based on PVAc/BaTiO3 shows energy density increase f…

Triboelectrification of nanocomposites using identical polymer matrixes with different concentrations of nanoparticle fillers

In this study, we investigate triboelectrification in polymer-based nanocomposites using identical polymer matrixes containing different concentrations of nanoparticles (NPs). The triboelectric surface charge density on polymer layers increased as the difference in nanoparticle filler concentration between the two triboelectric layers escalated, despite the fact that the polymer matrix was the same in both layers. This effect was observed in tests of various polymer types and filler NPs. Our mechanical experiments and finite element analysis simulations confirmed that polymeric triboelectrification is related to the surface viscoelastic deformation that occurs during mechanical contact and …

The role of intermolecular forces in contact electrification on polymer surfaces and triboelectric nanogenerators

This research was supported by the European Regional Development Fund within the project ‘‘Hybrid energy harvesting systems’’ 1.1.1.1./16/A/013.

Tribovoltaic Device Based on the W/WO3 Schottky Junction Operating through Hot Carrier Extraction

PVA Hydrogel Electrolyte and Porous Polyisoprene Carbon Nanostructure Composite Based Pressure Sensitive Supercapacitor

Special gratitude is in order to Raimonds Orlovs for temperature dependent resistance measurements. Financial support of project 1.1.1.1/16/A/013, “Hybrid energy harvesting systems” is greatly appreciated.

Hybrid Tribo-Piezo-Electric Nanogenerator with Unprecedented Performance Based on Ferroelectric Composite Contacting Layers

This research was supported by the European Regional Development Fund within the project ‘‘Hybrid energy harvesting systems’’ 1.1.1.1./16/A/013.

Triboelectric behaviour of selected MOFs in contact with metals

This work was funded by Latvian-Lithuanian-Taiwan Scientific Cooperation Support Fund (LV-LT-TW/2021/3) represented by the Research Council of Lithuania (Project Nr. S-LLT-21-2) and Latvian Council of Science (Project Nr. 03000-3.1.2.1-e/3). Fa-Kuen Shieh would like to thank the Ministry of Science and Technology, Taiwan, for funding support (MOST 110-2923-M-008-002-MY3). Part of the measurements were performed on equipment located at the Center of Excellence at the Institute of Solid State Physics, University of Latvia, which is supported by European Union's Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under Grant Agreement No. 739508, project CAMART2. O. Ve…