Fatigue resistant lead-free multilayer ceramic capacitors with ultrahigh energy density

被引：144
作者：
Wang, Ge [1 ]
Lu, Zhilun [1 ,2 ]
Yang, Huijing [1 ,3 ]
Ji, Hongfen [1 ,4 ]
Mostaed, Ali [1 ,5 ]
Li, Linhao [1 ]
Wei, Yiqi [1 ]
Feteira, Antonio [6 ]
Sun, Shikuan [1 ]
Sinclair, Derek C. [1 ]
Wang, Dawei [1 ]
Reaney, Ian M. [1 ]
机构：
[1] Univ Sheffield, Dept Mat Sci & Engn, Sheffield S1 3JD, S Yorkshire, England
[2] Henry Royce Inst, Sir Robert Hadfield Bldg, Sheffield S1 3JD, S Yorkshire, England
[3] Tangshan Normal Univ, Dept Phys, Tangshan 063000, Peoples R China
[4] Xian Technol Univ, Lab Thin Film Tech & Opt Test, Xian 710032, Peoples R China
[5] Univ Oxford, Dept Mat, Parks Rd, Oxford OX1 3PH, England
[6] Sheffield Hallam Univ, Christian Doppler Lab Adv Ferro Oxides, Sheffield S1 1WB, S Yorkshire, England
来源：
JOURNAL OF MATERIALS CHEMISTRY A | 2020年 / 8卷 / 22期
基金：
英国工程与自然科学研究理事会; 中国国家自然科学基金;
关键词：
RELAXOR FERROELECTRIC CERAMICS; STORAGE DENSITY; ION BATTERY; DIELECTRIC-BREAKDOWN; TEMPERATURE; PERFORMANCE; EFFICIENCY; STRAIN; FILMS; AL;
D O I：
10.1039/d0ta00216j
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The critical role of electrical homogeneity in optimising electric-field breakdown strength (BDS) and energy storage in high energy density (0.7 -x)BiFeO3-0.3BaTiO(3)-xBi(Li0.5Nb0.5)O-3(BF-BT-xBLN) lead-free capacitors is demonstrated. The high BDS for bulk ceramics and multilayers (dielectric layer thickness similar to 8 mu m) of similar to 260 and similar to 950 kV cm(-1), respectively, gives rise to record-performance of recoverable energy density,W-rec= 13.8 J cm(-3)and efficiency,eta= 81%. Under an electric field of 400 kV cm(-1), multilayers are temperature stable up to 100 degrees C, frequency independent in the range 10(-2)to 10(2)Hz, have low strain (<0.03%) and are fatigue-resistant up to 10(4)cycles (W(rec)variation < 10%). These properties show promise for practical use in pulsed power systems.
引用
收藏
页码：11414 / 11423
页数：10
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