首页|CaBi4Ti4O15-Bi(Fe0.93Mn0.05Ti0.02)O3铁电固溶体薄膜的制备及储能特性

CaBi4Ti4O15-Bi(Fe0.93Mn0.05Ti0.02)O3铁电固溶体薄膜的制备及储能特性

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采用金属有机分解法结合旋涂技术,在Pt(111)/TiO2/SiO2/Si衬底上制备(1-x)CaBi4Ti4O15-xBi(Fe0.93Mn0.05Ti0.02)O3(CBT-xBFMT,x=0,0.05,0.10,0.15)固溶体薄膜,通过X-射线衍射仪、场发射扫描电子显微镜、铁电分析仪和阻抗分析仪,系统研究了 CBT基薄膜的储能性能.结果表明,所制备的薄膜均呈现出多晶铋层状结构,无杂相生成.BFMT的引入增大了薄膜的最大极化强度Pm和抗击穿场强Eb,并降低了漏电流密度.随着BFMT固溶量的增加,CBT-xBFMT薄膜的抗击穿场强Eb先增大后减小,在x=0.10处达到最大;最大极化强度Pm逐渐增加,在x=0.10处极化强度差最大;最大抗击穿场强和最大极化强度差的共同作用使CBT-0.10BFMT薄膜具有最佳储能特性,有效储能密度Wrec和储能效率η分别为82.8 J/cm3和78.3%,且储能稳定性(25~150 ℃)良好.CBT-0.10BFMT铁电薄膜有望应用于环境友好型小型能量储存器件.
Preparation and Energy Storage Properties of CaBi4Ti4O15-Bi(Fe0.93Mn0.05Ti0.02)O3 Ferroelectric Solid Solution Thin Films
(1-x)CaBi4Ti4O15-xBi(Fe0.93Mn0.05Ti0.02)O3(CBT-xBFMT,x=0,0.05,0.10,0.15)solid solution films were successfully prepared on Pt(111)/TiO2/SiO2/Si substrates using metal organic decomposition combined with spin coating technology.And the energy storage properties of CBT thin films were systematically studied by X-ray diffractometer,field emission scanning electron microscope,ferroelectric analyzer and impedance analyzer.The results show that the prepared films all exhibit a polycrystalline bismuth layered structure without other phase formation.The addition of BFMT into thin film obviously enhances the maximum polarization strength Pm and breakdown field strength Eb,reduces the leakage current density.With the increase of BFMT solid solution,the breakdown field strength Eb of CBT-xBFMT film increases first and then decreases,and reaches the maximum value at x=0.10.The maximum polarization strength Pm gradually increases,and the largest polarization strength difference is obtained at x=0.10.The largest polarization intensity difference and breakdown field strength make CBT-0.10BFMT film has the best energy storage properties.The recoverable energy storage density Wrec and energy storage efficiency η of CBT-0.10BFMT film are up to 82.8 J/cm3 and 78.3%,respectively.And its energy storage characteristic has good temperature stability in the temperature range of 25~150 ℃.Therefore,CBT-0.10BFMT ferroelectric film is expected to be used in environmentally friendly micro energy storage devices.

CaBi4Ti4O15 thin filmsolid solutiondielectric energy storageelectric breakdown fieldpolarization intensity differencehigh temperature

余致尧、王文文、司景翔、苑秀芳、李成龙、林秀娟、杨长红

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济南大学山东省建筑材料制备与测试技术重点实验室,济南 250022

CaBi4Ti4O15薄膜 固溶体 介电储能 击穿场强 极化强度差 高温

国家自然科学基金面上项目山东省重点研发计划济南市"高校20条"项目

519721442022CXPT045T202009

2024

硅酸盐通报
中国硅酸盐学会 中材人工晶体研究院

硅酸盐通报

CSTPCD北大核心
影响因子:0.698
ISSN:1001-1625
年,卷(期):2024.43(6)