Synthesis of LSM-YSZ-GDC dual composite SOFC cathodes for high-performance power-generation systems
SCIE
SCOPUS
- Title
- Synthesis of LSM-YSZ-GDC dual composite SOFC cathodes for high-performance power-generation systems
- Authors
- Ko, HJ; Myung, JH; Hyun, SH; Chung, JS
- Date Issued
- 2012-04
- Publisher
- SPRINGER
- Abstract
- This article investigates a method in further improvement of a (La-0.8,Sr-0.2)MnO3 (LSM)-Yttria-stabilized zirconia (YSZ) dual composite cathode by adding material with high ionic conductivity such as gadolinia-doped ceria (GDC). A nano-porous composite cathode containing LSM, YSZ, and GDC was prepared by a two-step polymerizable complex (PC) method which minimizes the formation of YSZ-GDC solid solution. The structure of the resulting LSM/GDC-YSZ dual composite cathode was such that the LSM and GDC phases were present on the YSZ core particles without formation of the La2Zr2O7, SrZrO3, and GDC-YSZ solid solution. At 800 A degrees C, the electrode polarization resistance of the LSM/GDC-YSZ dual composite cathode decreased to 0.266 a"broken vertical bar cm(2), compared with 0.385 a"broken vertical bar cm(2) for the LSM/YSZ-YSZ dual composite cathode. In addition, the Ni-YSZ anode-supported single cell using a LSM/GDC-YSZ dual composite cathode with H-2 as the fuel achieved a maximum power density of 0.65 W cm(-2) at 800 A degrees C.
- Keywords
- Solid oxide fuel cell; Composite cathode; PC method; LSM; GDC; YSZ; OXIDE FUEL-CELLS; DURABILITY; ELECTRODES; KINETICS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/15601
- DOI
- 10.1007/S10800-012-0390-8
- ISSN
- 0021-891X
- Article Type
- Article
- Citation
- JOURNAL OF APPLIED ELECTROCHEMISTRY, vol. 42, no. 4, page. 209 - 215, 2012-04
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