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

被引：138

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

页码：11414 / 11423

页数：10

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