徐坤,张丹阳,展敏园,曹月丛,徐永豪

• 1:河南理工大学物理与电子信息学院

摘要(Abstract)：

通过在AgNbO_3的A位引入7%(摩尔分数)的Sr~(2+)(Ag_(0.86)Sr_(0.07)NbO_3),在降低了电滞ΔE的同时，将M_2-M_3相变调节至室温附近。在此基础上，结合轧膜成型工艺，设计了(1-x)Ag_(0.86)Sr_(0.07)NbO_3-x(Bi_(0.5)Li_(0.5))HfO_3(ASN-100xBLH,x=0.00～0.12)体系，在1050～1140℃氧气氛下保温2 h制备出致密性良好的厚膜陶瓷样品。结果表明，随着BLH掺杂浓度的增加，ASN-100xBLH陶瓷的击穿场强与储能特性均有不同程度的提升。在460 kV·cm~(-1)电场下，ASN-11BLH的储能性能达到最优，储能密度和储能效率分别为4.6 J·cm~(-3)和90.0%。此外，ASN-11BLH陶瓷表现出较好的温度稳定性和频率稳定性。在300 kV·cm~(-1)电场下，25～120℃的温度范围内，储能密度和储能效率的变化率分别为9.4%和9.8%;10～500 Hz频率范围内，储能密度和储能效率的变化率分别为1.9%和1.2%。

关键词(KeyWords)： AgNbO_3;相变调控;弛豫特性;轧膜成型;储能特性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金-青年基金(51702089);; 河南省科技攻关项目(212102210177);; 河南理工大学杰出青年科学基金(J2022-4)

作者(Author): 徐坤,张丹阳,展敏园,曹月丛,徐永豪

DOI: 10.14106/j.cnki.1001-2028.2023.0231

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