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The benefits of combining 1D and 3D nanofillers in a piezocomposite nanogenerator for biomechanical energy harvesting

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 H(2)(Zr(0.1)Ti(0.9))(3)O(7) na...

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Detalles Bibliográficos
Autores principales: 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
Formato: Online Artículo Texto
Lenguaje:English
Publicado: RSC 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9595181/
https://www.ncbi.nlm.nih.gov/pubmed/36341296
http://dx.doi.org/10.1039/d2na00429a
Descripción
Sumario: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 H(2)(Zr(0.1)Ti(0.9))(3)O(7) nanowires (HZTO-nw) and Ba(0.85)Ca(0.15)Zr(0.10)Ti(0.90)O(3) 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.