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By Qing Wang and Lei Zhu (Eds.)

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Figure 8b compares the experimental discharge time t0 with the theoretical discharge time for PVDF, P(VDF-CTFE)-g-PS, and BOPP. For a linear dielectric material, the theoretical relaxation time (τ) is defined from the voltage drop profile during discharge: Where t is time, V0 is the starting voltage, V(t) is the voltage at time t, and C is the capacitance of the capacitor. ; ACS Symposium Series; American Chemical Society: Washington, DC, 2010. ch003 Figure 7. Typical discharged energy density profiles for PVDF and P(VDF-CTFE)-g-PS(30%) at ca.

12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. ; Yang, X. ; Jow, T. R. In Large High Energy Density Pulse Discharge Capacitor Characterization, IEEE International Pulsed Power Conference, Monterey, CA, 2005; pp 1−4. ; Boggs, S. IEEE Trans. Dielectr. Electr. Insul. 2007, 14, 1295–1301. ; Picci, G. IEEE Trans. Plasm. Sci. 2002, 30, 1939–1942. Lovinger, A. J. Science 1983, 220, 1115–1121. Tashiro, K. Crystal Structure and Phase Transition of PVDF and Related Copolymers. ; Nalwa, H. ; Dekker: New York, 1995; pp 63−182.

A) TEM image of P(VDF-CTFE)-BaTiO3composites with 5 vol % BaTiO3. (b) Cross-sectional FE-SEM image of the P(VDF-TrFE-CTFE)-BaTiO3nanocomposite thin film containing 23 vol % BaTiO3. Figure 3. Dielectric constant and loss tangent of the P(VDF-TrFE-CTFE)-BaTiO3 (star) and P(VDF-CTFE)-BaTiO3 (square) nanocomposites measured at 1 kHz and room temperature. Open circles and squares are the calculated effective permittivity from the Lichtenecker law for the P(VDF-TrFE-CTFE) and P(VDF-CTFE) based composites, respectively.

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