| 复合BaTiO3的Li0.5La0.5TiO3固体电解质的制备和性能 |
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| 引用本文： | 尚随军,邓元,梅骜,林元华,刘丽玉,南策文.复合BaTiO3的Li0.5La0.5TiO3固体电解质的制备和性能[J].电源技术,2011,35(2):176-178. |
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| 作者姓名： | 尚随军 邓元 梅骜 林元华 刘丽玉 南策文 |
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| 作者单位： | 尚随军,SHANG Sui-jun(比克国际(天津)有限公司,天津,300402);邓元,刘丽玉,DENG Yuan,LIU Li-yu(北京航空航天大学材料学院,北京,100083);梅骜,林元华,南策文,MEI Ao,LIN Yuan-hua,NAN Ce-wen(清华大学材料系,北京,100084) |
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| 摘 要： | 采用高温固相法合成具有高离子电导率的固体电解质Li0.5La0.5TiO3,并以Li0.5La0.5TiO3为母体,通过复合高介电纳米BaTiO3制得一系列不同复合量的复合电解质。对样品进行XRD、SEM分析,并应用交流阻抗技术测试其电导率。母体钛酸镧锂(LLTO)为存在超结构的立方晶体,30℃时晶粒电导率为1.1×10-3S/cm。在复合样品中,LLTO与BaTiO3形成具有棒状结构的钙钛矿型固溶体(Li、La、Ba)TiO3。在低的复合量下(小于10%),复合样品的晶粒电导率比纯样晶粒电导率高。120℃时,母体与复合5%样品的晶粒电导率分别为0.84×10-2、2.39×10-2S/cm,活化能分别为0.22、0.40eV。
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| 关 键 词： | 钙钛矿 固相法 固体电解质 钛酸镧锂 BaTiO3 |
Preparation and properties of Li_(0.5)La_(0.5)TiO_3 mixed with BaTiO_3 |
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| SHANG Sui-jun,DENG Yuan,MEI Ao,LIN Yuan-hua,LIU Li-yu,NAN Ce-wen.Preparation and properties of Li_(0.5)La_(0.5)TiO_3 mixed with BaTiO_3[J].Chinese Journal of Power Sources,2011,35(2):176-178. |
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| Authors: | SHANG Sui-jun DENG Yuan MEI Ao LIN Yuan-hua LIU Li-yu NAN Ce-wen |
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| Affiliation: | SHANG Sui-jun1,DENG Yuan 2,MEI Ao 3,LIN Yuan-hua 3,LIU Li-yu 2,NAN Ce-wen 3(1.BAK International(Tianjin) Limited,Tianjin 300402,China,2.School of Materials Science and Engineering,Bei Hang University,Beijing 100083,3.Department of Materials Science and Engineering,Tsinghua University,Beijing 100084,China) |
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| Abstract: | A pure phase of the solid electrolyte Li0.5La0.5TiO3(LLTO) was prepared by the conventional solid-state rea-ction method,and those LLTO powders were mixed with BaTiO3 nano particles to prepare the composite.The microstructure morphology and conductivity properties of the composite were investigated by X-ray diffraction,scanning electron microscope and AC impedance method.The grain conductivity of LLTO bulk sample is 1.1×10-3 S/cm.The perovskite-type solid solution(Li,La,Ba)TiO3 rods can be found in the composite.At the lower dopant concentration(<10%),the grain conductivity of the composite electrolyte is higher than that of the pure LLTO.The grain conductivities of LLTO and LLTO doped with 5 % BaTiO3 at 120 ℃ are 0.84×10-2 S/cm and 2.39×10-2 S/cm respectively. |
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| Keywords: | BaTiO3 |
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