journal article·2017-12-01Open access

Dielectric and energy storage performances of PVDF-based composites with colossal permittivitied Nd-doped BaTiO3 nanoparticles as the filler

Jing Wang, Juntao Hu, Qiaomei Sun, Kongjun Zhu, Bao-Wen Li, Jinhao Qiu

AIP Advances· Volume 7· Issue 12

Abstract

The energy storage density of pure polymers is usually limited by their low intrinsic dielectric constants (εeff). Integrating polymer matrix with ceramic particles with high εeff values has been one powerful approach to enhance the εeff values of polymer composites and thus their energy storage density. In this study, we report a flexible polymer-based composite by introducing Nd-doped BaTiO3 (NBT) nanoparticles (εeff over 3×105) into the poly(vinylidene fluoride) (PVDF). The phase of PVDF and its dielectric behavior could be adjusted by varying the NBT loadings. Composites including less than 5 vol.% NBT loading exhibited enhanced dielectric constants and maintained high breakdown strength. With a quenching process, the composite delivers a discharged energy density up to 7.91 J/cm3 at an electric field of 350 kV/mm with 2.5 vol.% NBT loading, which is 140% more than that of pure PVDF at the same electric field.
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Research context

OpenAlex topics: Dielectric materials and actuators · Advanced Sensor and Energy Harvesting Materials · Ferroelectric and Piezoelectric Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Mechanics and Control of Mechanical Structures, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics 1 , Nanjing 210016, China

College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics 2 , Nanjing 210016, China

School of Materials Science and Engineering, Wuhan University of Technology 3 , Wuhan 430070, China

Funding

A project Funded by the Priority Academic Program Develpment of Jiangsu Higher Education Institutions · The Research Fund of State Key Laboratory of Mechanics and Control of Mechanical Structures · National Natural Science Foundation of China

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