A5043931740- Advanced Sensor and Energy Harvesting Materials
- Conducting polymers and applications
- Dielectric materials and actuators
- Fuel Cells and Related Materials
- Electrochemical sensors and biosensors
- Analytical Chemistry and Sensors
- Supercapacitor Materials and Fabrication
- Green IT and Sustainability
- Surface Modification and Superhydrophobicity
- Electrospun Nanofibers in Biomedical Applications
Riga Technical University
2021-2025
Contact electrification and the triboelectric effect are complex processes for mechanical-to-electrical energy conversion, particularly highly deformable polymers. While generating relatively low power density, contact can occur at contact–separation interface between nearly any two polymer surfaces. This ubiquitousness of surfaces enables to be an important phenomenon understand conversion harvesting applications. The mechanism charge generation polymeric materials remains ambiguous, with...
Surface functionalization with SAMs can increase the contact-separation charge of PDMS layers by three orders magnitude. The effect SAM be matched roughness to enhance density.
The triboelectric performance of PDMS films can be regulated through surface functionalization self-assembled monolayers. A combination nano-characterization techniques reveals the underlying mechanism.
Abstract Triboelectrification of polymers enables mechanical energy harvesting in triboelectric generators, droplet and ferroelectrets. Herein, polymers, inspired by the ordering spider‐silk, with strongly enhanced contact electrification are presented. The polyether block amide (PEBA) is induced addition inorganic goethite (α‐FeOOH) nanowires that form H‐bonds elastomeric matrix. as little 0.1 vol% α‐FeOOH into PEBA increases surface charge more than order magnitude (from 0.069 to 0.93 nC...
In the present work, we demonstrate that incorporating UiO-66 and UiO-66-NH 2 MOF particles into PEBA polymer increases triboelectric surface charge density enables control of polarity by using MOFs with modified linkers.
Polystyrene (PS) is a very common material in packaging. In this study, it recycled by turning into energy harvesting devices: triboelectric generators. Herein, heat‐pressed films of PS are formed and their surfaces modified physically chemically. The properties the determined using dynamic testing machine, performance generators evaluated with high‐speed contact–separation system. developed charge density generator increases two orders magnitude—from 0.03 to 1.52 nC cm −2 —by combining...
Abstract Triboelectric nanogenerator (TENG) devices are exemplar systems for mechanical‐to‐electrical energy conversion due to their simplicity and promising performance. However, little attention has been paid recycling or reusing TENG devices. Indeed, most based on non‐biodegradable polymers, thus end up in a landfill. Developing biodegradable triboelectric materials is crucial mitigate negative environmental impacts from growing use, however, it challenging identify such that generate an...