Ultrahigh discharge efficiency and improved energy density in rationally designed bilayer polyetherimide-BaTiO3/P(VDF-HFP) composites

doi:10.1039/d0ta00903b

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	Ultrahigh discharge efficiency and improved energy density in rationally designed bilayer polyetherimide-BaTiO3/P(VDF-HFP) composites
	Sun L1 ; Shi ZC 1; Wang HLi 1; Zhang K(张坤)2 ; Dastan D 3; Sun K 4; Fan RH 4
通讯作者	Shi, Zhicheng(zcshi@ouc.edu.cn) ; Zhang, Kun(zhangkun@imech.ac.cn)
发表期刊	JOURNAL OF MATERIALS CHEMISTRY A
	2020-03-21
卷号	8 期号:11 页码:5750-5757
ISSN	2050-7488
摘要	Polymer dielectric composites are of great interest as film capacitors that are widely used in pulsed power systems. For a long time, huge efforts have been devoted to achieving energy densities as high as possible to satisfy the miniaturization and high integration of electronic devices. However, the discharge efficiency which is particularly crucial to practical applications has gained little attention. With the target of achieving concurrently improved energy density and efficiency, a class of rationally designed bilayer composites consisting of a pure polyetherimide layer and a BaTiO3/P(VDF-HFP) composite layer were prepared. Interestingly, the bilayer composites exhibit ultrahigh discharge efficiencies eta (>95%) under external electric fields up to 400 kV mm(-1) which are much higher than most of the so far reported results (eta < 80%). Meanwhile, a low loss (tan delta < 0.05 @ 10 kHz) comparable to that of the pure polyetherimide is obtained. In addition, the bilayer composites show impressive improvements in breakdown strengths E-b, i.e., 285%, 363%, 366% and 567% for composites with 5 vol%, 10 vol%, 20 vol% and 40 vol% BaTiO3, compared to their single layer counterparts, resulting in obviously improved energy densities U-d. In particular, the bilayer composite with 10 vol% BaTiO3 displays the most prominent comprehensive energy storage performance, i.e., eta similar to 96.8% @ 450 kV mm(-1), U-d similar to 6 J cm(-3) @ 450 kV mm(-1), tan delta similar to 0.025 @ 10 kHz, and E-b similar to 483.18 kV mm(-1). The ultrahigh discharge efficiencies and high energy densities, along with low loss and breakdown strengths, make these bilayer composites ideal candidates for high-performance dielectric energy-storage capacitors.
DOI	10.1039/d0ta00903b
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000521109000034
关键词[WOS]	HIGH DIELECTRIC-CONSTANT ; POLYMER NANOCOMPOSITES ; NEGATIVE PERMITTIVITY ; STORAGE PERFORMANCE ; BREAKDOWN STRENGTH ; FILMS ; ENHANCEMENT ; CAPACITORS
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
WOS类目	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
资助项目	National Natural Science Foundation of China[51773187] ; National Natural Science Foundation of China[51402271] ; Foundation for Outstanding Young Scientist in Shandong Province[BS2014CL003]
项目资助者	National Natural Science Foundation of China ; Foundation for Outstanding Young Scientist in Shandong Province
论文分区	一类
力学所作者排名	1
RpAuthor	Shi, Zhicheng ; Zhang, Kun
引用统计	被引频次：163[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/81823
专题	微重力重点实验室
作者单位	1.Ocean Univ China, Sch Mat Sci & Engn, Qingdao 266100, Peoples R China; 2.Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Natl Micrograv Lab, Beijing 100190, Peoples R China; 3.Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA; 4.Shanghai Maritime Univ, Inst Marine Mat Sci & Engn, Shanghai 201306, Peoples R China
推荐引用方式 GB/T 7714	Sun L,Shi ZC,Wang HLi,et al. Ultrahigh discharge efficiency and improved energy density in rationally designed bilayer polyetherimide-BaTiO3/P(VDF-HFP) composites[J]. JOURNAL OF MATERIALS CHEMISTRY A,2020,8,11,:5750-5757.
APA	Sun L.,Shi ZC.,Wang HLi.,张坤.,Dastan D.,...&Fan RH.(2020).Ultrahigh discharge efficiency and improved energy density in rationally designed bilayer polyetherimide-BaTiO3/P(VDF-HFP) composites.JOURNAL OF MATERIALS CHEMISTRY A,8(11),5750-5757.
MLA	Sun L,et al."Ultrahigh discharge efficiency and improved energy density in rationally designed bilayer polyetherimide-BaTiO3/P(VDF-HFP) composites".JOURNAL OF MATERIALS CHEMISTRY A 8.11(2020):5750-5757.

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