Novel Strontium Titanate-Based Lead-Free Ceramics for High-Energy Storage Applications
Novel Strontium Titanate-Based Lead-Free Ceramics for High-Energy Storage Applications
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用于高能量存储应用的新型钛酸锶基无铅陶瓷
DOI：
10.1021/acssuschemeng.7b02203
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发表时间：
2017-10
影响因子：
8.4
通讯作者：
Wang Tong
中科院分区：
文献类型：
--
作者：
Yang Haibo;Yan Fei;Lin Ying;Wang Tong
为了实现先进脉冲功率电容器的小型化和集成化，开发具有高可回收能量密度(WREC)和高储能效率(η)的无铅陶瓷材料是非常必要的。而WREC(<；2J/cm~3)和η(<；80%)由于电击穿强度低(BDS<；200kV/cm)或最大极化(Pmax)较小而受到严重限制。本研究采用成分控制的方法来提高材料的最大储能能力，进而获得优异的储能性能。采用流延法制备了x=0.0~0.5的(1-x)SrTiO_3-x(0.93BNT-Bi0.5Na0.5TiO3-0.07Ba0.94La0.04Zr0.02Ti0.98O3)(1-x)ST-x(BNT-BLZT))三元固溶体陶瓷，并用固相烧结法进行了烧结。所有样品都表现出细小的极化-电场(P-E)环。0.8ST-0.2(BNT-BLZT)陶瓷具有优良的储能性能，Wrec值为2.83J/cm3，η为85%。显著提高了Wrec(2.83J/cm~3)，几乎是以前报道的η>；80%无铅陶瓷的2倍。结果表明，(1-x)ST-x(BNT-BLZT)无铅陶瓷可用于脉冲功率电容器，为ST基陶瓷的研究开辟了新的途径。
To achieve the miniaturization and integration of advanced pulsed power capacitors, it is highly desirable to develop lead-free ceramic materials with high recoverable energy density (Wrec) and high energy storage efficiency (η). Whereas,Wrec(<2 J/cm3) and η (<80%) have be seriously restricted because of low electric breakdown strength (BDS < 200 kV/cm) or small maximum polarization (Pmax). Composition control was used to enhance thePmaxand further obtain excellent energy storage properties in our study. (1–x)SrTiO3-x(0.93 Bi0.5Na0.5TiO3-0.07Ba0.94La0.04Zr0.02Ti0.98O3) ((1–x)ST-x(BNT-BLZT)) ternary solid solution ceramics withx= 0.0–0.5 were fabricated using the tape-casting process and sintered by solid-state sintering method. All the samples show slim polarization-electric field (P–E) loops. The ceramic of 0.8ST-0.2(BNT-BLZT) possesses excellent energy storage properties with aWrecof 2.83 J/cm3and a η of 85% simultaneously. The significantly enhancedWrec(2.83 J/cm3) is almost 2 times higher than the previous reported results of lead-free ceramics with η > 80%. The results indicate that (1–x)ST-x(BNT-BLZT) lead-free ceramics can be used for pulsed power capacitors and open up a new research of ST-based ceramics.
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DOI：
10.1007/s10854-017-6600-8
发表时间：
2017
期刊：
Journal of Materials Science: Materials in Electronics
影响因子：
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发表时间：
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影响因子：
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