HANANI, Zouhair; IZANZAR, Ilyasse; MERSELMIZ, Soukaina; EL ASSIMI, Taha; MEZZANE, Daoud; AMJOUD, M'Barek; URŠIČ, Hana; PRAH, Uroš; GHANBAJA, Jaafar; SAADOUNE, Ismael; LAHCINI, Mohammed; SPREITZER, Matjaž; VENGUST, Damjan; EL MARSSI, Mimoun; KUTNJAK, Zdravko; LUK'YANCHUK, Igor; GOUNÉ, Mohamed

doi:10.1039/d2se00234e

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HANANI, Zouhair
Université Cadi Ayyad [Marrakech] [UCA]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Jozef Stefan Institute [Ljubljana] [IJS]

IZANZAR, Ilyasse
Université Cadi Ayyad [Marrakech] [UCA]

MERSELMIZ, Soukaina
Université Cadi Ayyad [Marrakech] [UCA]

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Sustainable Energy & Fuels. 2022-03-08, vol. 6, n° 8, p. 1983-1991

Royal Society of Chemistry

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The field of piezoelectric nanogenerators is rapidly growing as a promising technology for driving lowpower portable devices and self-powered electronic systems by converting wasted mechanical energy into electric energy. In this study, we designed a flexible and self-poled piezocomposite nanogenerator based on lead-free H 2 (Zr 0.1 Ti 0.9) 3 O 7 (HZTO) nanowires and a polylactic acid (PLA) biodegradable polymer. By using a piezoresponse force microscope (PFM), the piezoelectric coefficient (d 33) of a single HZTO nanowire was found to be 26 pm V À1. The piezoelectric energy harvesting performances of a selfpoled piezocomposite film fabricated by embedding core-shell structured HZTO nanowires by polydopamine into the PLA matrix were tested. The piezoelectric nanogenerator demonstrated enhanced output performances (an open-circuit voltage of 5.41 V, short-circuit current of 0.26 mA and maximum power density of 463.5 mW cm À3 at a low resistive load of 2.5 MU). Besides, the developed device can charge different capacitors by regular mechanical impartations and can power a red lightemitting LED diode by various biomechanical motions. This study reveals the benefits of combining HZTO nanowires and PLA biopolymer in designing high-performance piezoelectric nanocomposites for biomechanical energy harvesting.< Réduire

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A flexible self-poled piezocomposite nanogenerator based on H<sub>2</sub>(Zr<sub>0.1</sub>Ti<sub>0.9</sub>)<sub>3</sub>O<sub>7</sub> nanowires and polylactic acid biopolymer

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