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Nanostructures and dielectric properties of PVDF-based polymer films with high energy density and low energy losses

  • Masahiko Ando (a1), Naoki Yoshimoto (a1), Yuichiro Yoshitake (a2), Shuji Kato (a2), Hidekazu Kodama (a3), Takeo Furukawa (a3) and Koji Tashiro (a4)...

Abstract

Based on the investigation of mechanism for large dielectric losses in relaxor fluorinated polymers, polyvinylidene fluoride (PVDF) derivatives, a new nanostructure-controlled PVDF based polymer films with low dielectric loss, tanδ < 1% (0.6%), and high dielectric constant, εr = 13 at frequency of 1 kHz, was proposed for electrical energy storage applications. The high dielectric loss was mainly due to the electric-field induced α-β phase transition, and one dimensional extension of P(VDF-TrFE)-g-PEMA films was found to reduce the α phase component resulting in reduction of the dielectric loss while keeping the high dielectric constant. In-situ FTIR measurements suggested a possibility of further reducing the dielectric-loss.

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Nanostructures and dielectric properties of PVDF-based polymer films with high energy density and low energy losses

  • Masahiko Ando (a1), Naoki Yoshimoto (a1), Yuichiro Yoshitake (a2), Shuji Kato (a2), Hidekazu Kodama (a3), Takeo Furukawa (a3) and Koji Tashiro (a4)...

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