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Item type:Publication, High-permittivity polymer–matrix composites for the development of triboelectric nanogenerators (TENGs) with enhanced performance: A review(Springer, 2024-08-01)In recent years, the rapid increase in low-power electronics has shifted research focus towards new energy-harvesting devices. Triboelectric energy-harvesting technologies, such as triboelectric nanogenerators (TENGs), offer an efficient way to convert mechanical energy into electrical energy through the triboelectric effect. Polymers are used to fabricate crucial components in TENGs, acting as the triboelectric layers and storing electric charge. The dielectric properties of these polymers significantly influence the energy conversion capabilities of TENGs. High-permittivity polymer-based composites and nanocomposites have been studied for energy storage, such as capacitors, supercapacitors, and solar cells among others. These high-permittivity polymer composites can also be used to develop novel TENGs with high output performance. This paper reviews the development of high-dielectric-permittivity polymeric composites to be used as active triboelectric surfaces for TENGs with enhanced output performance. One strategy involves incorporating inorganic materials, semiconductors, conductors, and carbon-derived materials as an active phase within the polymer matrix. Other strategies, including the usage of polymeric fillers, coating, polarization, and ion implantation techniques, are also reported. This review may serve as a reference for optimizing polymer-based dielectrics in energy-harvesting-related areas. Through a deeper understanding of these techniques and materials, we can enhance the performance of TENGs to achieve high output efficiency.1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Lignocellulosic Biomass for the Fabrication of Triboelectric Nano-Generators (TENGs)—A Review(Multidisciplinary Digital Publishing Institute (MDPI), 2023-11-01)Growth in population and increased environmental awareness demand the emergence of new energy sources with low environmental impact. Lignocellulosic biomass is mainly composed of cellulose, lignin, and hemicellulose. These materials have been used in the energy industry for the production of biofuels as an eco-friendly alternative to fossil fuels. However, their use in the fabrication of small electronic devices is still under development. Lignocellulose-based triboelectric nanogenerators (LC-TENGs) have emerged as an eco-friendly alternative to conventional batteries, which are mainly composed of harmful and non-degradable materials. These LC-TENGs use lignocellulose-based components, which serve as electrodes or triboelectric active materials. These materials can be derived from bulk materials such as wood, seeds, or leaves, or they can be derived from waste materials from the timber industry, agriculture, or recycled urban materials. LC-TENG devices represent an eco-friendly, low-cost, and effective mechanism for harvesting environmental mechanical energy to generate electricity, enabling the development of self-powered devices and sensors. In this study, a comprehensive review of lignocellulosic-based materials was conducted to highlight their use as both electrodes and triboelectric active surfaces in the development of novel eco-friendly triboelectric nano-generators (LC-TENGs). The composition of lignocellulose and the classification and applications of LC-TENGs are discussed.