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DOI	10.1039/c8ee03287d
	Ultrahigh energy storage density lead-free multilayers by controlled electrical homogeneity
	Wang G.; Li J.; Zhang X.; Fan Z.; Yang F.; Feteira A.; Zhou D.; Sinclair D.C.; Ma T.; Tan X.; Wang D.; Reaney I.M.
发表日期	2019
ISSN	1754-5692
起始页码	582
结束页码	588
卷号	12 期号:2
英文摘要	Ultrahigh discharge energy density (W dis = 10.5 J cm -3 ) and efficiency (η = 87%) have been obtained in doped BiFeO 3 -BaTiO 3 ceramic multilayers by achieving an electrically rather than chemically homogeneous microstructure. Back scattered scanning and transmission electron microscopy combined with energy dispersive X-ray spectroscopy mapping of (0.7-x)BiFeO 3 -0.3BaTiO 3 -xNd(Zn 0.5 Zr 0.5 )O 3 (0.05 ≤ x ≤ 0.10) ceramics revealed a core-shell grain structure which switched from a bright to dark contrast as x increased. Compositions with x = 0.08 were at the point of cross over between these two manifestations of core-shell contrast. Dielectric measurements together with the absence of macrodomains in diffraction contrast TEM images suggested that compositions with x = 0.08 exhibited relaxor behaviour within both the core and shell regions. Impedance spectroscopy demonstrated that, despite being chemical dissimilar, the grains were electrically homogeneous and insulating with little evidence of conductive cores. Multilayers of x = 0.08 had enhanced breakdown strength, E BDS > 700 kV cm -1 and a slim hysteresis loop which resulted in large W dis and high η which were temperature stable to <15% from 25 to 150 °C. © 2019 The Royal Society of Chemistry.
语种	英语
scopus关键词	Barium titanate; Ceramic materials; Energy dispersive spectroscopy; High resolution transmission electron microscopy; Multilayers; Scanning electron microscopy; Shells (structures); Dielectric measurements; Diffraction contrast; Discharge energy density; Electrical homogeneity; Energy dispersive X ray spectroscopy; Homogeneous microstructure; Impedance spectroscopy; Scanning and transmission electron microscopy; Dark energy; ceramics; diffraction; electrical method; energy efficiency; energy storage; homogeneity; hysteresis; lead; microstructure
来源期刊	Energy and Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162813
作者单位	Department of Materials Science and Engineering, University of Sheffield, Sheffield, S13JD, United Kingdom; Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, International Center for Dielectric Research, Xi'An Jiaotong University, Xi'an, Shaanxi, 710049, China; Henry Moseley X-ray Imaging Facility, Henry Royce Institute, School of Materials, University of Manchester, Manchester, M139PL, United Kingdom; Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011, United States; Materials and Engineering Research Institute, Sheffield Hallam University, Sheffield, S11WB, United Kingdom; Ames Laboratory, U.S. Department of Energy, Ames, IA 50011, United States
推荐引用方式 GB/T 7714	Wang G.,Li J.,Zhang X.,et al. Ultrahigh energy storage density lead-free multilayers by controlled electrical homogeneity[J],2019,12(2).
APA	Wang G..,Li J..,Zhang X..,Fan Z..,Yang F..,...&Reaney I.M..(2019).Ultrahigh energy storage density lead-free multilayers by controlled electrical homogeneity.Energy and Environmental Science,12(2).
MLA	Wang G.,et al."Ultrahigh energy storage density lead-free multilayers by controlled electrical homogeneity".Energy and Environmental Science 12.2(2019).