journal article·2018-11-26

PVDF-Based Dielectric Composite Films with Excellent Energy Storage Performances by Design of Nanofibers Composition Gradient Structure

Yue Zhang, Qingguo Chi, Lizhu Liu, Tiandong Zhang, Changhai Zhang, Qingguo Chen, Xuan Wang, Qingquan Lei

ACS Applied Energy Materials· Volume 1· Issue 11
Publisher page

Abstract

The dielectric polymer-based films with excellent energy storage properties have been considered as potential candidates for flexible capacitors. In this study, the hierarchical gradient structures of the 0.5Ba(Zr0.2Ti0.8)O3–0.5(Ba0.7Ca0.3)TiO3 nanofibers (BZCT NFs) are designed in the polyvinylidene fluoride (PVDF) composite films. The composite films with different compositions of BZCT NFs gradient structure were prepared by layer-by-layer electrospinning, hot-pressing, and quenching processes. The microstructures and electrical properties have been studied, and the results indicate that the BZCT NFs gradient structures can simultaneously improve the polarization and the breakdown strength of the PVDF-based composite films, leading to the enhancement of energy storage density (9.8 J/cm3) compared to that of pristine PVDF films (4.2 J/cm3). This work provides an efficient route to improve the energy storage properties of polymer-based composite films by structure modulation.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Dielectric materials and actuators · Advanced Sensor and Energy Harvesting Materials · Electromagnetic wave absorption materials

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

Affiliations

School of Materials Science and Engineering, Harbin University of Science and Technology, 52 Xuefu Road, Harbin, Heilongjiang 150080, P. R. China

Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, 52 Xuefu Road, Harbin, Heilongjiang 150080, P. R. China

School of Electrical and Electronic Engineering, Harbin University of Science and Technology, 52 Xuefu Road, Harbin, Heilongjiang 150080, P. R. China

State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, 4 Second Section on Jianshe North Road, Chengdu, Sichuan 610054, P. R. China

Funding

Harbin University of Science and Technology · National Natural Science Foundation of China · Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China

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