氧化钇掺杂锆铈酸钡质子导体的制备及性能研究

doi:10.3724/SP.J.1077.2012.12085

无机材料学报 ›› 2012, Vol. 27 ›› Issue (12): 1256-1260.DOI: 10.3724/SP.J.1077.2012.12085 CSTR: 32189.14.SP.J.1077.2012.12085

氧化钇掺杂锆铈酸钡质子导体的制备及性能研究

江虹^{1, 2}, 郭瑞松¹, 徐江海³, 高沿英¹, 邓雅平¹

(1. 天津大学先进陶瓷与加工技术教育部重点实验室, 天津 300072; 2. 贵州广播电视大学, 贵阳 550004; 3. 贵州大学化学与化工学院, 贵阳 550002)

收稿日期:2012-02-12 修回日期:2012-03-26 出版日期:2012-12-20 网络出版日期:2012-11-19
作者简介:江虹(1960–), 女, 教授. E-mail: jh481709@163.com
基金资助:
贵州省省校科技合作计划项目([2011]7002)

Preparation and Properties of Yttrium Doped Barium Zirconate-cerate Proton Conductors

JIANG Hong^1,2, GUO Rui-Song¹, XU Jiang-Hai³, GAO Yan-Ying¹, DENG Ya-Ping¹

(1. Key Laboratory of Advanced Ceramics and Machining Technology, Ministry of Education, Tianjin University, Tianjin 300072, China; 2. Guizhou Broadcasting and Television College, Guiyang 550004, China; 3.Guizhou University, Guiyang 550004, China)

Received:2012-02-12 Revised:2012-03-26 Published:2012-12-20 Online:2012-11-19
About author:JIANG Hong. E-mail: jh481709@163.com
Supported by:
Guizhou Province-university Scientific and Technological Cooperation Programe ([2011]7002)

摘要/Abstract

摘要： 采用高温固相法制备了钇掺杂锆铈酸钡(BaZr_0.90-xCe_xY_0.10O_3-δ, x=0.09、0.18、0.27)(即BZCY系列)前驱体粉末, 研究了烧结性能和电导率. 结果表明, 在所研究的组成范围内, x=0.27(即C3)试样为最佳. 再进一步通过优化烧结助剂ZnO添加量以提高试样的烧结性能及电化学性能. 实验表明, ZnO能够与前驱体发生固溶取代反应, 有效地提高了样品烧结性能. 随着ZnO添加量的增加, 试样烧结致密度提高, 但直流电导率先增大后减小. 当ZnO添加量为2mol%(C3-Z2)时, 试样具有最高的直流电导率, 800℃在湿H₂中电导率可达9.27 mS/cm. C3-Z2试样的XRD衍射峰与BaCeO₃、BaZrO₃标准衍射峰相比出现一定角度的偏移, 而与BaCe_0.4Zr_0.6O₃的标准图谱相对吻合较好.

关键词: BaZrO₃, BaCeO₃, 质子导体, 电导率, 烧结助剂

Abstract: Yttrium doped barium zirconate-cerate (BaZr_0.90-xCe_xY_0.10O_3-δ, x=0.09, 0.18, 0.27, BZCY) powders were synthesized by the conventional solid state reaction route. The x value was optimized to be 0.27 in the composition range. That is to say, the sample with x=0.27 had the best sinterability and conductivity among the three composites. The sintering behavior and electrical conductivity could be further improved by optimizing the addition content of ZnO sintering aid. ZnO was able to form a solid solution with BZCY, resulting in the enhancement of sinterability. As increasing the amount of ZnO, density of the sintered samples increased. However, conductivity did not increase monotonously with the addition of ZnO. When the content of ZnO was 2mol% (C3-Z2), the sample had the highest DC conductivity, reaching 9.27 mS/cm at 800℃ in wet H₂ atmosphere. A small shift of the main peaks of the XRD pattern for the sample C3-Z2 was clearly observed compared with the standard patterns for BaCeO₃ and BaZrO₃. The XRD pattern of the sample C3-Z2 was in a good agreement with that of BaCe_0.4Zr_0.6O₃ sample.

Key words: BaZrO₃, BaCeO₃, proton conductor, conductivity, sintering aid

中图分类号:

TB34

江虹, 郭瑞松, 徐江海, 高沿英, 邓雅平. 氧化钇掺杂锆铈酸钡质子导体的制备及性能研究[J]. 无机材料学报, 2012, 27(12): 1256-1260.

JIANG Hong, GUO Rui-Song, XU Jiang-Hai, GAO Yan-Ying, DENG Ya-Ping. Preparation and Properties of Yttrium Doped Barium Zirconate-cerate Proton Conductors[J]. Journal of Inorganic Materials, 2012, 27(12): 1256-1260.

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氧化钇掺杂锆铈酸钡质子导体的制备及性能研究

Preparation and Properties of Yttrium Doped Barium Zirconate-cerate Proton Conductors

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