RETRACTED: Enhanced flexible piezoelectric generating performance via high energy composite for wireless sensor network (Retracted article. See vol. 189, 2019)

Abstract

Retraction notice to “Enhanced flexible piezoelectric generating performance via high energy composite for wireless sensor network”[Energy 159 (2018) 196–202](S0360544218311137)(10.1016/j.energy.2018.06.048)(2019) Energy, 189, Article number 116461

Piezoelectric 0.72 Pb(Zr0.47Ti0.53)O3-0.28 Pb[(Zn0.45Ni0.55)1/3Nb2/3]O3 + 0.5 mol% CuO (PNNC) particles were made for use in a composite of flexible energy harvester (FEH) that can convert sustainable mechanical deformation into electrical energy. The PNNC particles with a high transduction coefficient (d33 × g33) were mixed with polydimethylsiloxane (PDMS) matrix to produce the FEH. The FEH generated maximum output voltage of 55.24 V and current density of 2.76 μA/cm2 (power density: 554 μW/cm3, 3.2 mW) at the resonance frequency of 11 Hz. The energy conversion efficiency of about 20.7% has been achieved. The developed energy harvester is demonstrated in the self-powered wireless sensor node application in which the FEH spontaneously generated stable power under continuous mechanical stress.