Ultrahigh energy density of polymer nanocomposites containing BaTiO3@TiO2 nanofibers by atomic-scale interface engineering.

Zhang, Xin; Shen, Yang; Zhang, Qinghua; Gu, Lin; Hu, Yuhan; Du, Jiawen; Lin, Yuanhua; Nan, Ce-Wen · Adv Mater · 2015

basic_science · Level V

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Abstract

Atomic-scale interface engineering in BaTiO3@TO2 nanofibers (TiO2 nano-fibers embedded with BaTiO3 nano-particles) leads to concurrent enhancement of electric displacement and breakdown strength in poly(vinylidene fluoride) (PVDF)-based nanocomposites. An ultrahigh energy density of ≈20 J cm(-3) is achieved with only 3 vol% nanofibers, which is by far the highest discharged energy density of PVDF-based nanocomposites.