Triple perovskite-based triboelectric nanogenerator: a facile method of energy harvesting and self-powered information generator. (June 2021)

• Record Type: Journal Article
• Authors: Sahu, M.; Hajra, S.; Bijelic, J.; Oh, D.; Djerdj, I.; Kim, H.J.
• Is Part Of: Materials today energy. Volume 20(2021)
• Publication Date: 2021-06
• Subjects: Dielectric -- Biomechanical -- Renewable energy -- Sol-gel -- Soft electronics; Energy development -- Periodicals; Energy industries -- Periodicals; Power resources -- Periodicals; Energy policy -- Periodicals; Energy development; Energy industries; Energy policy; Power resources; Electronic journals; Periodicals; 621.042
• DOI: 10.1016/j.mtener.2021.100639
• Languages: English
• ISSNs: 2468-6069

Abstract

Abstract: A modified aqueous sol-gel reaction is used to synthesize a triple perovskite with a composition Sr3 Co2 WO9 (SCWO). The structural analysis conducted at room temperature reveals the presence of the cubic phase with space group Fm-3m . The microstructure of the as-synthesized SCWO particles shows a different size of particles depicting a polycrystalline nature. Triboelectrification is a trending and unique concept in energy scavenging methodologies with flexibility in choosing from a variety of materials. This paves the way to evolve eco-friendly triboelectric energy harvesters as a replacement for the limitation of batteries. The outstanding dielectric properties and low loss make triple perovskite a promising candidate for TENG. A triboelectric nanogenerator (TP-TENG) was designed, which operates in vertical contact separation mode generating an electrical response of voltage and current of 300 V and 2.2 μA, respectively, for 10 wt% polydimethylsiloxane-Sr3 Co2 WO9 (PDMS-SCWO) composite film. The power density of the rough surface TP-TENG was 30.5 μW/cm 2, which is much higher than the power density of 5.5 μW/cm 2 of plain surface TP-TENG. The positive and negative triboelectric layers of the TP-TENG were made up of aluminum and PDMS-SCWO composite film, respectively. Furthermore, the excellent flexibility and durability of TP-TENG make it suitable for sensing various gaits and information signaling (Morse code) in real-time applications, as well as for charging commercial capacitors. Graphical abstract: Image 1 Highlights: The lead-free triple perovskite nanoparticles are synthesized using a cheap modified sol-gel route. The structural and the electrical properties confirm phase purity with high dielectric constant. The vertical contact-separate mode TP-TENG is fabricated having stable output. The TP-TENG acted as a sustainable power source and self-powered information generator.