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Acta Metall Sin  2012, Vol. 48 Issue (5): 587-592    DOI: 10.3724/SP.J.1037.2012.00097
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THREE-LAYER CO-FIRING FABRICATION OF LaCrO3-BASED CERAMIC INTERCONNECT, COMPOSITE ANODE SUPPORT AND YSZ ELECTROLYTE
WANG Songlin 1,2, FENG Yi2, WANG Dongsheng1, WANG Jingwen1
1. Department of Mechanical Engineering, Tongling University, Tongling 244061
2. Department of Materials Science and Engineering, Hefei University of Technology, Hefei 230009
Cite this article: 

WANG Songlin, FENG Yi, WANG Dongsheng, WANG Jingwen. THREE-LAYER CO-FIRING FABRICATION OF LaCrO3-BASED CERAMIC INTERCONNECT, COMPOSITE ANODE SUPPORT AND YSZ ELECTROLYTE. Acta Metall Sin, 2012, 48(5): 587-592.

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Abstract  Developing cost-effective methods to prepare dense ceramic interconnect membrane for solid oxide fuel cell (SOFC) stacks is currently considered as a major technical obstacle. In order to improve the co-firing compatibility of LaCrO3-based interconnects with the traditional YSZ-based SOFC anode support NiO/YSZ, interconnect material of  La0.7Ca0.3Cr0.97O3-δ(LCC) was introduced to NiO/YSZ anode. Triple-phase composite NiO/YSZ/LCC was prepared, and then examined as novel anode support. Sintering character, microstructure, electrical conductivity, and thermal expansion coefficient of the composite anode were investigated in detail as a function of LCC addition, respectively. Results indicated that the NiO/YSZ/LCC composite anode had excellent overall performance. Furthermore, by using a simple drop-coating process, LCC and YSZ wet membranes were prepared on the opposite surfaces of NiO/YSZ/LCC support, respectively. Followed by three-layer co-firing at 1400℃ in air for 4 h, dense La0.7Ca0.3Cr0.97O3-δ interconnect and YSZ electrolyte thin membranes were both successfully prepared on the porous NiO/YSZ/LCC anode support. This work presents a simple drop-coating/three-layer co-firing technical route for developing dense interconnect and electrolyte membranes for YSZ-based SOFC stacks.
Key words:  ceramic interconnect      thin membrane      three-layer co-firing      solid oxide fuel cell (SOFC)     
Received:  24 February 2012     
ZTFLH: 

O611.6

 
  TM911

 
Fund: 

National Natural Science Foundation of China

URL: 

https://www.ams.org.cn/EN/10.3724/SP.J.1037.2012.00097     OR     https://www.ams.org.cn/EN/Y2012/V48/I5/587

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