溶液燃烧合成法制备Zr掺杂的BaTiO_(3)介电陶瓷及其储能性能研究  

Preparation of Zr-doped BaTiO_(3) dielectric ceramics by solution combustion synthesis and its energy storage performance

作　　者：燕美伶 左承阳 李江艳 曹知勤 余子函 朱丹雨 潘小莉 Yan Meiling;Zuo Chengyang;Li Jiangyan;Cao Zhiqin;Yu Zihan;Zhu Danyu;Pan Xiaoli(College of Vanadiun and Titanium,Panzhihua University,Panzhihua 617000,Sichuan,China;Vanadium and Titanium Resource Comprehensive Utilization Key Laboratory of Sichuan Province,Panzhihua 617000,Sichuan,China)

机构地区：[1]攀枝花学院钒钛学院,四川攀枝花617000 [2]钒钛资源综合利用四川省重点实验室,四川攀枝花617000

出　　处：《钢铁钒钛》2023年第2期55-60,共6页Iron Steel Vanadium Titanium

基　　金：国家级大学生创新创业训练计划项目(202011360003)。

摘　　要：介电陶瓷电容器具有超高的功率密度和超快的充放电速度,在能量回收系统、脉冲大功率领域等具有重要的应用前景。以硝酸钡、钛酸丁酯、硝酸氧锆、甘氨酸以及硝酸为原料,柠檬酸为络合剂,硝酸锰为助烧剂,采用溶液燃烧法制备了Zr掺杂的BaTi((1-x))ZrxO_(3)(BTZx)介电陶瓷。分别采用X射线衍射仪和扫描电子显微镜对BTZx介电陶瓷样品进行了物相和微观形态分析。利用精密阻抗分析仪和铁电分析仪研究了BTZx介电陶瓷样品的介电和储能性能。研究结果表明,Zr^(4+)的引入细化了陶瓷晶粒,提高了击穿强度,增加了离子混乱度,有效减小了剩余极化。当x=0.20时,获得优异的储能性能:在350 kV/cm下,可释放能量密度和储能效率分别达到1.60 J/cm^(3)和88.5%。Dielectric ceramic capacitors have important application prospects in energy recovery systems and pulse power fields due to their ultrahigh power density and ultrafast charging-discharging speed.In this paper,Zr-doped BaTi(1-x)ZrxO_(3)(BTZx)dielectric ceramics were prepared by solution combustion synthesis with barium nitrate,butyl titanate,zirconium nitrate,glycine and nitric acid as raw materials,citric acid as complexing agent and manganese nitrate as sintering aid.The crystalline structure and microscopic morphologies of BTZx dielectric ceramic samples were analyzed by X-ray diffractometer and scanning electron microscope,respectively.The dielectric and energy storage properties of the BTZx dielectric ceramic samples were investigated using a precision impedance analyzer and a ferroelectric analyzer.The results show that the introduction of Zr^(4+)refines the ceramic grains,improves the breakdown strength,increases the ionic disorder,and effectively reduces the remanent polarization.When x=0.20,excellent energy storage performance is obtained:at 350 kV/cm,the recoverable energy density and energy storage efficiency reach 1.60 J/cm^(3) and 88.5%,respectively.

关 键 词：介电陶瓷 BaTiO_(3) 溶液燃烧合成 介电性能 储能性能 

分 类 号：TQ174.75[化学工程—陶瓷工业] TB34[化学工程—硅酸盐工业]