期刊
JOURNAL OF MATERIOMICS
卷 6, 期 2, 页码 371-376出版社
ELSEVIER
DOI: 10.1016/j.jmat.2019.04.006
关键词
Dielectric nanocomposite; Energy storage; Nanobelt; Breakdown strength
资金
- National Natural Science Foundation of China [51790491, 51622209, 21521001]
- National Key Research and Development Program of China [2016YFA0300103, 2015CB921201]
Modern electronics and electric power grids require high performance polymer-based dielectric nanocomposites. To realize large-scale applications, the energy density of nanocomposites needs to be further increased. Here, we demonstrate a remarkable improvement in energy density of poly(vinylidene fluoride) (PVDF) matrix upon the incorporation of high-k Bi4.2K0.8Fe2O9+delta (BKFO) nanobelts. High aspect ratio BKFO nanobelts can enhance the Young's moduli of the nanocomposites and increase the path tortuosity of electrical trees, which are favorable for increasing the breakdown strength of the system. Thus, the dielectric constant and breakdown strength increase simultaneously at a low volume fraction (0.35 vol%) of BKFO nanobelts, and an ultrahigh recoverable energy density of 25.4 J/cm(3) is achieved. These results provide a strategy to develop high performance flexible high-energy-density devices. (C) 2019 The Chinese Ceramic Society. Production and hosting by Elsevier B.V.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据