Core‐Shell ZnO@Microporous Organic Polymer Nanospheres as Enhanced Piezo‐Triboelectric Energy Harvesting Materials

Abstract

Core-shell nanospheres were prepared by the homogeneous coating of piezoelectric ZnO nanorod aggregates with triboelectric microporous organic polymer (MOP). The small energy harvesting performance of ZnO@MOP was significantly enhanced, compared with those of ZnO and MOP, due to the piezoelectrification-induced polarization of inner ZnO and the enhanced generation of tribopositive charges of MOP. Piezo-triboelectric nanogenerators (PTENGs) fabricated with ZnO@MOP showed peak-to-peak voltages of up to 534 V and a maximum power density of 1.19 mW cm À 2 . In addition, the PTENGs showed excellent durability for 30 000 cycles, demonstrating as efficient power sources for charging electrolytic capacitors and for operating 200 green light emitting diode bulbs.

Microporous organic nanoparticles bearing tri-Zn macrocycles: heterogeneous catalysts for the conversion of biomass-derived furan esters to polymer platforms

“…28 In the IR spectrum of MOPN-TZnM, while the main vibration peaks of TZnM were retained at 2993, 1463, 1227, and 1114 cm −1 , new vibration peaks were observed at 1607, 1502, and 825 cm −1 , corresponding to aromatic CC and C–H vibrations originating from the tetra(4-ethynylphenyl)methane building block. 29…”

Self-Powered Medical Implants Using Triboelectric Technology

“…Many reports have been proposed to achieve high output performances of TENGs, thus making them suitable for powering a wide range of medical implants. At first, Figure a shows the methods of embedding high dielectric nanoparticle materials into polymer matrices to enhance their surface potential. − Seung et al reported a high dielectric nanocomposite material, BTO@P­(VDF-TrFE), composed of barium titanate nanoparticles (BTO) and polyvinylidene fluoride-trifluoroethylene (P­(VDF-TrFE)) . They employed Kelvin probe force microscopy (KPFM) to quantify the surface potential of BTO@P­(VDF-TrFE).…”

Advances in high‐temperature operatable triboelectric nanogenerator

“…Typically, at least one of the triboelectric surfaces used in TENG is composed of a polymer material, 83,84 such as polyvinylidene fluoride (PVDF), 85,86 PI, 13,87 nylon, 88,89 polyacrylonitrile, 90,91 and polytetrafluoroethylene 92,93 . Compared to classical metal and inorganic tribo‐materials, polymer tribo‐materials (PTMs) possess various functional groups (–F, –CN, –COOH, and –CONH), which can facilitate charge transfer and capture during the CE process through their unique hybrid orbital configurations 8,94,95 . Furthermore, PTMs also offer numerous advantages, including diverse material selection, excellent flexibility, processability, extensibility, ductility, and lightweight, making them the fundamental building blocks of TENG technology 8,96 …”