Dielectric and Energy Storage Property of BaTiO3-ZnNb2O6 Ceramics

Dielectric and Energy Storage Property of BaTiO3-ZnNb2O6 Ceramics
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BaTiO3-ZnNb2O6 陶瓷的介电和储能性能

DOI:
10.15541/jim20190170
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发表时间:
2019
影响因子:
1.7
通讯作者:
Lu Yawen
Lu Yawen
中科院分区:
材料科学4区
文献类型:
--
作者:
Wang Tong;Wang Yuanhao;Yang Haibo;Gao Shuya;Wang Fen;Lu Yawen

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采用固相法合成了(1- x)BaTiO 3 -xZnNb 2 O 6(x = 0.5mol%,1mol%,1.5mol%,2mol%,3mol%,4mol%)(BTZN)陶瓷。系统研究了BTZN陶瓷的烧结温度、结构、介电性能和铁电性能。随着ZnNb 2 O 6含量的增加,BTZN陶瓷的烧结温度降低。XRD结果表明,当ZnNb 2 O 6含量达到3mol%时,出现第二相Ba 2 Ti 5 O 12。介电性能测试结果表明,随着ZnNb 2 O 6含量的增加,BTZN陶瓷的介电常数逐渐减小,而介电常数的频率稳定性逐渐增加。介电常数的温度依赖性测试结果表明,所有BTZN陶瓷均符合X8 R电容器的特性。随着ZnNb 2 O 6含量的增加,BTZN陶瓷的极化值降低.当x =4mol%时,在240 kV/cm时,可回收能量密度为1.22J/cm 3,储能效率为77.6%。
: (1- x )BaTiO 3 - x ZnNb 2 O 6 ( x =0.5mol%, 1mol%, 1.5mol%, 2mol%, 3mol%, 4mol%) (BTZN) ceramics were synthesized by solid state method. The sintering temperature, structure, dielectric property and ferroelectric property of BTZN ceramics were systematically investigated. The sintering temperature of BTZN ceramics decreased with increasing ZnNb 2 O 6 content. XRD results show that the second phase Ba 2 Ti 5 O 12 was observed when the content of ZnNb 2 O 6 reached 3mol%. The dielectric measurements result showed that with increasing ZnNb 2 O 6 content, the dielectric constant of BTZN ceramics decreased gradually, while the frequency stability of dielectric constant increased gradually. The temperature dependence of dielectric constant results showed that all BTZN ceramics met the charac-teristics of X8R capacitors. The polarization values of BTZN ceramics decreased with increasing ZnNb 2 O 6 content. Recoverable energy density of 1.22 J/cm 3 and Energy storage efficiency of 77.6% were achieved at 240 kV/cm for the sam-ple with x =4mol% .
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