https://scholars.lib.ntu.edu.tw/handle/123456789/576961
標題: | Processing of high conductive Bi2O3/8YSZ composites as SOFC electrolyte | 作者: | Liu L.-D Cheng Y.-H Wei W.-C.J. WEN-CHENG J. WEI |
公開日期: | 2019 | 卷: | 20 | 期: | 4 | 起(迄)頁: | 347-356 | 來源出版物: | Journal of Ceramic Processing Research | 摘要: | Dual-phasic composites consisted of continuous Bi2O3 matrix and 8 mol% yttria stabilized zirconia particulates were prepared by solid-state-sintering or liquid-phase-sintering, and investigated over the temperature range between 250-650oC to reveal good electrical conductivity and matched thermal expansion to the components used for intermediate-temperature solid oxide fuel cell (SOFC). Interface reactions occurred during sintering either at 750oC or 900oC could enhance the diffusion of Zr, Y and Bi ions, to form effective diffusion zone for stabilizing δ-Bi2O3 matrix. The results showed a dual-structure of 66 mol% 8YSZ-34 m% Bi2O3 with up to 76% δ-phase content was stabilized by solid-state sintering, surpassing a bulk conductivity of 10?2 Scm?1 at 500oC. The coefficient of thermal expansion value exhibited by the composite between 25oC and 650oC was found to be 10-12.2 ppm*K?1, which was in good agreement with that of CeO2-based electrolyte. Thus, it was confirmed that the addition of ZrO2 could stabilize the Bi2O3, by improving its capability as a solid electrolyte for intermediate temperature SOFC. ? 2019, Hanyang University. All rights reserved. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85073396068&partnerID=40&md5=892534599712d5a1ddcf31fe727c7088 https://scholars.lib.ntu.edu.tw/handle/123456789/576961 |
ISSN: | 12299162 |
顯示於: | 材料科學與工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。