Enhancement of the piezoelectric performance of GN nanosheets/PVDF nanocomposite film using electrostatic layer and penetrated electrode

• Published in: Journal of alloys and compounds 2024-10, Vol.1001, p.175160, Article 175160
• Main Authors: Si, Suman Kumar, Paria, Sarbaranjan, De, Anurima, Bera, Aswini, Bera, Sumanta, Ojha, Suparna, Maity, Parna, Mondal, Ankita, Khatua, Bhanu Bhusan
• Format: Article
• Language: English
• Subjects: Electrostatic layer; GN/PVDF nanocomposite film; Penetrated Cu electrode; Piezoelectric nanogenerator; Surface modification
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2024.175160

The efficiency of the piezoelectric nanogenerator is a vital factor for the superior performance of the nanogenerator to achieve a green and eco-friendly technology in the development of modern electronics. Piezoelectric nanogenerators (PNGs) have limited use in mechanical energy harvesting due to their low output performance. The output has been a major source of concern for PNG's development. A new design of PNG based on g-C3N4 nanosheets(GN)/PVDF nanocomposite film (GPNC) using penetrated Cu electrode and electrostatic layer is proposed to overcome this problem. By creating numerous peripheral contacts within the piezoelectric material, the overall number of surface polarization charges increased. Also, an electrostatic contribution from graphene oxide contributes to an increased output voltage. The syngeristic effect of high % γ-nuclei, penetrated electrode, and electrostatic effect is supposed to vital for carry out significant piezoelectric outputs (V∼34.4 V and I ∼3.2 µA) and superior force sensitivity (0.93 V/kPa). In practical applications, the designed PNG can competently harvest electrical energy from various human movements, and also can detect low physiological actions. Our work offers a simple but effective perspective for high-performance piezoelectric nanogenerator fabrication and progress a stride toward self-powered day-to-day used electronics. [Display omitted] •Designed a piezoelectric nanogenerator using Cu penetrated electrode, electrostatic layer, and g-C3N4/PVDF film is proposed.•The interfacial interaction between g-C3N4 and PVDF enhances the γ-phase crystallization of PVDF.•Synergistic effect of penetrated Cu NWs electrode, electrostatic GO layer greatly improves the piezoelectric outputs.•GPPNG displays an output voltage of ~34.3 V and a short circuit current of ~3.2 µA under human finger imparting.•The fabricated GPPNG can power up 22 red LEDs and several smart electronics i.e. mobile screen, watch and calculator.