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首页> 外文期刊>Journal of power sources >Structural and electrical properties of BaCe(Ti,Y)03 protonic conductors
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Structural and electrical properties of BaCe(Ti,Y)03 protonic conductors

机译：BaCe（Ti，Y）03质子导体的结构和电性能

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摘要

Barium cerate exhibits high protonic conductivity, especially when doped by suitable trivalent ions. A possible approach to get the protonic conductor stable in the presence of CO_2 with relatively high protonic conductivity is the preparation of solid solutions of BaCe_(1-x)Me_xO_(3-In this work selected properties of series of Ba(Ce_(0.95)Ti_(0.05))_(1-y)Y_yO_(3-≤y≤0.2) materials prepared by solid-state reaction method were investigated. X-ray diffraction (XRD), scanning electron microscopy (SEM) and direct current (DC) electrical measurements, including open cell voltage (OCV) measurements of electrochemical cells were used as experimental techniques. Structural studies have shown materials crystallized in orthorhombic Pmcn phase with the solubility limit of Y in Ba(Ce_(0.95)Ti_(0.05))_(1-y)Y_yO_(3-The DC conductivity measurements accompanied by the potentiometric OCV measurements of solid state electrochemical cells in controlled gas atmospheres (containing H_2, O_2 and H_2O) and temperatures (500-800℃) allowed determination of total electrical conductivity and transference numbers of oxygen, protonic and electronic defects in prepared materials. The introduction of Y increases total electrical conductivity and transference numbers for protonic defects, which was correlated with structural changes.
机译：铈钡显示出高的质子传导性，尤其是当被合适的三价离子掺杂时。在具有相对较高质子传导率的CO_2存在下使质子导体稳定的一种可能方法是制备BaCe_（1-x）Me_xO_（3-）的固溶体。在这项工作中，选择了一系列Ba（Ce_（0.95）研究了固态反应法制备的Ti_（0.05））_（1-y）Y_yO_（3-≤y≤0.2）材料的X射线衍射（XRD），扫描电子显微镜（SEM）和直流电（DC）电学测量，包括电化学电池的开路电压（OCV）测量，作为实验技术；结构研究表明，材料在正交晶Pmcn相中结晶，其在Ba（Ce_（0.95）Ti_（0.05）_ （1-y）Y_yO_（3-直流电导率测量与固态电化学电池在受控气体气氛（包含H_2，O_2和H_2O）和温度（500-800℃）中的电位OCV测量一起可以确定总电导率和转移编号准备好的材料中存在氧气，质子和电子缺陷。 Y的引入增加了质子缺陷的总电导率和转移数，这与结构变化有关。

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  • 来源
    《Journal of power sources》 |2011年第15期|p.6205-6209|共5页
  • 作者

    P. Pasierb; M. Osiadfy; S. Komornicki; M. Rekas;

  • 作者单位

    ACH University of Science and Technology, Faculty of Materials Science and Ceramics, al. Mickiewicza 30.30-059 Krakow, Poland;

    ACH University of Science and Technology, Faculty of Materials Science and Ceramics, al. Mickiewicza 30.30-059 Krakow, Poland;

    ACH University of Science and Technology, Faculty of Materials Science and Ceramics, al. Mickiewicza 30.30-059 Krakow, Poland;

    ACH University of Science and Technology, Faculty of Materials Science and Ceramics, al. Mickiewicza 30.30-059 Krakow, Poland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    protonic conductors; barium cerate; barium titanate; solid solution; acceptor doping; partial conductivity; hydrogen membranes; chemical stability;

    机译：质子导体铈钡钛酸钡实在的方法;受体掺杂;部分电导率氢膜化学稳定性;

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