Ultrahigh β-phase content poly(vinylidene fluoride) with relaxor-like ferroelectricity for high energy density capacitors

Abstract Poly(vinylidene fluoride)-based dielectric materials are prospective candidates for high power density electric storage applications because of their ferroelectric nature, high dielectric breakdown strength and superior processability. However, obtaining a polar phase with relaxor-like behavior in poly(vinylidene fluoride), as required for high energy storage density, is a major challenge. To date, this has been achieved using complex and expensive synthesis of copolymers and terpolymers or via irradiation with high-energy electron-beam or γ-ray radiations. Herein, a facile process of pressing-and-folding is proposed to produce β-poly(vinylidene fluoride) (β-phase content: ~98%) with relaxor-like…

• CS
  China Scholarship Council

  Awards: 201506630005, 201606280030
• EA
  Engineering and Physical Sciences Research Council

  Awards: EP/L017695/1, EP/L017695/1, MASSIVE, EP/L017695, EP/L017695/1
• CG
  Chinese Government Scholarship

  Awards: 201606280030, 201506630005