The benefits of combining 1D and 3D nanofillers in a piezocomposite nanogenerator for biomechanical energy harvesting. Issue 21 (11th October 2022)

• Record Type: Journal Article
• Authors: Hanani, Zouhair; Izanzar, Ilyasse; Merselmiz, Soukaina; Amjoud, M'barek; Mezzane, Daoud; Ghanbaja, Jaafar; Saadoune, Ismael; Lahcini, Mohammed; Spreitzer, Matjaž; Vengust, Damjan; El Marssi, Mimoun; Kutnjak, Zdravko; Luk'yanchuk, Igor A.; Gouné, Mohamed
• Is Part Of: Nanoscale advances. Volume 4:Issue 21(2022)
• Page Start: 4658
• Page End: 4668
• Publication Date: 2022-10-11
• Subjects: 620.5
• DOI: 10.1039/d2na00429a
• Languages: English
• ISSNs: 2516-0230

Abstract

Abstract : Design of a self-poled, bio-flexible and ultra-sensitive piezoelectric nanogenerator based on HZTO nanowires and BCZT multipods as fillers and PLA as a biopolymer matrix. Abstract : Mechanical energy harvesting using piezoelectric nanogenerators (PNGs) offers an attractive solution for driving low-power portable devices and self-powered electronic systems. Here, we designed an eco-friendly and flexible piezocomposite nanogenerator (c-PNG) based on H2 (Zr0.1 Ti0.9 )3 O7 nanowires (HZTO-nw) and Ba0.85 Ca0.15 Zr0.10 Ti0.90 O3 multipods (BCZT-mp) as fillers and polylactic acid (PLA) as a biodegradable polymer matrix. The effects of the applied stress amplitude, frequency and pressing duration on the electric outputs in the piezocomposite nanogenerator (c-PNG) device were investigated by simultaneous recording of the mechanical input and the electrical outputs. The fabricated c-PNG shows a maximum output voltage, current and volumetric power density of 11.5 V, 0.6 μA and 9.2 mW cm −3, respectively, under cyclic finger imparting. A high-pressure sensitivity of 0.86 V kPa −1 (equivalent to 3.6 V N −1 ) and fast response time of 45 ms were obtained in the dynamic pressure sensing. Besides this, the c-PNG demonstrates high-stability and durability of the electrical outputs for around three months, and can drive commercial electronics (charging capacitor, glowing light-emitting diodes and powering a calculator). Multi-physics simulations indicate that the presence of BCZT-mp is crucial in enhancing the piezoelectric response of the c-PNG. Accordingly, this work reveals that combining 1D and 3D fillers in a polymer composite-based PNG could be beneficial in improving the mechanical energy harvesting performances in flexible piezoelectric nanogenerators for application in electronic skin and wearable devices.