Piezoelectric Energy Harvesting from a Ferroelectric Hybrid Salt [Ph3MeP]4[Ni(NCS)6] Embedded in a Polymer Matrix.

Organic-inorganic hybrid ferroelectrics are an exciting class of molecular materials with promising applications in the area of energy and electronics. Herein, we report the synthesis, ferroelectric and piezoelectric energy harvesting behavior of a 3d metal ion-containing A 4 BX 6 type organic-inorganic hybrid salt [Ph 3 MeP] 4 [Ni(NCS) 6 ] ( 1 ) that crystallizes in the polar monoclinic space group Cc . The P-E hysteresis loop studies on 1 show a remnant ferroelectric polarization value of 18.71 muC cm -2 , at room temperature. Composite thermoplastic polyurethane (TPU) devices with 5, 10, 15 and 20 weight percent (wt %) compositions of 1 were prepared and employed for piezoelectric energy harvesting studies. A maximum output voltage of 19.29 V and a calculated power density value of 2.51 mW cm -3 were observed for the 15 wt % 1 -TPU device. Further, the capacitor charging experiments on the 15 wt % 1 -TPU composite device shows an excellent energy storage performance with the highest stored energies and measured charges of 198.8 muJ and 600 muC, respectively.