Sustainable powering triboelectric nanogenerators: Approaches and the path towards efficient use

다국어 초록 (Multilingual Abstract)

<P><B>Abstract</B></P> <P>Triboelectric nanogenerators (TENGs), which have demonstrated that all moving things in the universe can generate electricity in a sustainable way are currently being developed to be integrated with electronics, and to improve user convenience. The electrically charged surface upon a contact electrification phenomenon caused by contact of the materials determines the output performance of TENGs. This review focuses on the electrification and surface charge density characteristics of various fluoropolymer-based materials as active materials that have been investigated to realize high performance TENGs, and the results of the study of their applications. Furthermore, the characteristics of electrification with differently polymerized P(VDF-TrFE) as TENGs’ active materials and their applications are reviewed. The boosted output performance characteristics when used as a matrix material and integrated with a composite system with a high dielectric constant material are also reviewed. Finally, the paper presents three perspectives on the direction of TENG research for future improvement, namely material, structure, and circuitry.</P> <P><B>Highlights</B></P> <P> <UL> <LI> This article summarizes the state-of-the-art research on progress of various fluoropolymer materials-based high performing TENGs. </LI> <LI> We introduced an origin of the triboelectric effect and explained the working principle of TENGs with four different working modes. </LI> <LI> Representative fluoropolymers and ferroelectric polymer, P(VDF-TrFE) based TENGs and their output performances are summarized. </LI> <LI> The paper aims to cover materials for high performing TENGs and suggest future research direction in aspects; material, structure, circuitry. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>We report a comprehensive review of the state-of-the-art research on recent progress of various fluoropolymer materials-based high performance triboelectric nanogenerators (TENGs). TENGs are mechanical energy harvesters based on charge transfer, and thus maximizing the electrical potential difference is major contributing factor. We discuss the most high performance TENGs exploiting fluorine-based polymers and series of materials having excellent electron affinity properties. Finally, this review is aiming to suggest direction for future research of TENGs in following perspectives; material, structure, circuitry.</P> <P>[DISPLAY OMISSION]</P>