fig3

Figure 3. Piezoelectric performance of the PAN/Zr(OAc)₄ composite nanofiber membrane sensor at different heat-treatment. (A) Dependence of open-circuit voltage and (B) short-circuit current; (C) Voltage and current line graphs; (D) Voltage and instantaneous power of the sensor at different external load resistances; (E) Polarity reversal test of the sensor; (F) Stability test under 10,000 cycles; PAN/Zr(OAc)₄ composite membranes untreated and at different heat treatment temperatures under room temperature conditions (~25 °C): (G) ferroelectric properties (P-E); (H) dielectric constant and (I) piezoelectric coefficient d₃₃ curve. PAN: Polyacrylonitrile; Zr(OAc)₄: zirconium acetate; P-E: polarization-electric field.