Giant Energy Density and Improved Discharge Efficiency of Solution-Processed Polymer Nanocomposites for Dielectric Energy Storage.

Zhang, Xin; Shen, Yang; Xu, Ben; Zhang, Qinghua; Gu, Lin; Jiang, Jianyong; Ma, Jing; Lin, Yuanhua et al. · Adv Mater · 2016

basic_science · Level V

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Abstract

Large-aspect-ratio composite nanofibers with interior hierarchical interfaces are employed to break the adverse coupling of electric displacement and breakdown strength in flexible poly(vinylidene fluoride-hexafluoropropylene) nanocomposite films, a small loading of 3 vol% BaTiO3@TiO2 nanofibers gives rise to the highestenergy density (≈31.2 J cm(-3)) ever achieved in polymer nanocomposites dielectrics.