无铅AgNbO_(3)@KH560/PMMA反铁电复合材料的储能性能研究  

Study on energy storage properties of lead-free AgNbO_(3)@KH560/PMMA antiferroelectric composites

作　　者：王卓[1] 吴丹 WANG Zhuo;WU Dan(School of Material Science and Engineering,Shaanxi University of Science&Technology,Xi′an 710021,China)

机构地区：[1]陕西科技大学材料科学与工程学院,陕西西安710021

出　　处：《陕西科技大学学报》2023年第3期123-130,共8页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(51572160);中国博士后科学基金项目(2016T9081);陕西省科技厅自然科学基金项目(2017KJXX44);陕西科技大学研究生创新基金项目。

摘　　要：首先采用共沉淀法成功制备出了AgNbO_(3)粉体,并用硅烷偶联剂KH560对粉体进行表面改性,然后采用流延法制备了不同AgNbO_(3)@KH560添加量的AgNbO_(3)@KH560/PMMA复合材料,并研究其电导率、介电性能和储能性能,确定了性能最佳的AgNbO_(3)粉体的添加量.结果表明,当AgNbO_(3)粉体的添加量为3 wt%时,在100 Hz下复合材料的介电常数约为7.01;当AgNbO_(3)粉体的添加量为0.3 wt%时,复合材料在360 kV/mm电场下,其储能密度为10.03 J/cm3,储能效率达到96.36%.Firstly,AgNbO_(3) powder was successfully prepared by co-precipitation method,and the surface of the powder was modified by silane coupling agent KH560.Then,AgNbO_(3)@KH560/PMMA composites with different amount of AgNbO_(3)@KH560 were prepared by ducting method,and their electrical conductivity,dielectric properties and energy storage properties were studied.The addition amount of AgNbO_(3) powder with the best performance was determined.The results show that when the additive amount of AgNbO_(3) powder is 3 wt%,the dielectric constant of the composite is about 7.01 at 100 Hz,and when the additive amount of AgNbO_(3) powder is 0.3 wt%,the energy storage density of the composite is 10.03 J/cm 3 under 360 kV/mm electric field.Energy storage efficiency reached 96.36%.

关 键 词：反铁电体 介电 储能密度 

分 类 号：TB332[一般工业技术—材料科学与工程]