MOF-derived NiO/N-MWCNTs@PVDF film and MXene/Carbon/Ecoflex electrode for enhanced hybrid nanogenerator towards environmental monitoring

• Published in: Composites. Part A, Applied science and manufacturing Vol. 173
• Main Authors: Wang, Yunfeng, Gui, Yingang, He, Shasha, Yang, Jiacheng
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.10.2023
• Subjects: A. Carbon nanotubes and nanofibers; A. Multifunctional composites; B Electrical properties; Hybrid nanogenerator; A. Carbon nanotubes and nanofibers; Hybrid nanogenerator; A. Multifunctional composites; B Electrical properties
• ISSN: 1359-835X; 1878-5840
• DOI: 10.1016/j.compositesa.2023.107692

•Convert freestanding TENG to contact-separated TENG to effectively improve the output performance.•The prepared MOF-derived NiO and N-MWCNTs for synergistic enhancement of dielectric layer performance.•MXene/Carbon/Ecoflex electrodes greatly improve contact efficiency and thus output performance.•Self-powered gas alarm and environmental monitoring based on hybrid nanogenerator. In this study, through structural design, thin film doping modification, and electrode preparation, a high-performance triboelectric nanogenerator (TENG) has been achieved, and an electromagnetic generator is incorporated as an energy supplement to construct a self-powered sensing system for gas alarm and environmental monitoring. The high porosity of NiO derived from MOFs, high charge accumulation, and the high charge carrier mobility of N-MWCNTs promote charge capture and transfer, greatly enhancing the output performance of the triboelectric nanogenerator. Under the optimal doping ratio, the open-circuit voltage can reach 860 V, and the maximum short-circuit current up to 47 μA, sufficient to power 600 LEDs lights, achieving a power density of 10.45 W/m2. Meanwhile, MXene/Carbon/Ecoflex electrodes were fabricated to enhance the contact efficiency between the thin film and electrodes, further obtaining an open circuit voltage of 1020 V. This work provides a viable solution for the design of high-performance hybrid nanogenerators.