期刊
CERAMICS INTERNATIONAL
卷 42, 期 10, 页码 11772-11779出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2016.04.098
关键词
Solid oxide fuel cell; Composite cathode support; Mixing method; Microstructure
资金
- Korea Institute of Energy Technology Evaluation and Planning (KETEP) from Ministry of Trade, Industry & Energy, Republic of Korea [20143030031440, 20148520120150]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20148520120150, 20143030031440] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Equal amounts of Gd0.1Ce0.9O2-delta (GDC) were added to La0.65Sr0.3MnO3-delta/(Y2O3)(0.08)(ZrO2)(0.92) (LSM/YSZ) powder either by physical mixing or by sol-gel process, to produce a porous cathode support for solid oxide fuel cells (SOFCs). The effect of the GDC mixing method was analyzed in view of sinterability, thermal expansion coefficient, microstructure, porosity, and electrical conductivity of the LSM/YSZ composite. GDC infiltrated LSM/YSZ (G-LY) composite showed a highly porous microstructure when compared with mechanically mixed LSM/YSZ (LY) and LSM/YSZ/GDC (LYG) composites. The cathode support composites were used to fabricate the button SOFCs by slurry coating of YSZ electrolyte and a nickel/YSZ anode functional layer, followed by co-firing at 1250 degrees C. The G-LY composite cathode-supported SOFC showed maximum power densities of 215, 316, and 396 mW cm(-2) at 750, 800, and 850 degrees C, respectively, using dry hydrogen as fuel. Results showed that the GDC deposition by sol-gel process on LSM/YSZ powder before sintering is a promising technique for producing porous cathode support for the SOFCs. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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