Preparation of BaZr0.1Ce0.7Y0.2O3-δ Based Solid Oxide Fuel Cells with Anode Functional Layers by Tape Casting

Fuel Cells ◽  
2011 ◽  
Vol 11 (2) ◽  
pp. 178-183 ◽  
Author(s):  
S. H. Nien ◽  
C. S. Hsu ◽  
C. L. Chang ◽  
B. H. Hwang
Author(s):  
Haoran Wang ◽  
Ze Lei ◽  
Han Zhang ◽  
Yongkang Li ◽  
Junmeng Jing ◽  
...  

Abstract A water-based tape casting slurry is reported to prepare the ceria and scandia co-doped zirconia (ScSZ) electrolyte films. The slurry is characterized and optimized through Zeta potential and rheological property measurements. Smooth and flat ScSZ electrolyte films are obtained by improving the sintering process. The microstructure, electrical performance, and mechanical property of ScSZ with adding different contents of Al2O3 are also investigated. The results show that a proper amount of Al2O3 has a beneficial effect on the densification of ScSZ. Significant decrease at the grain boundary resistance of ScSZ is observed by Al2O3 addition. The bending strength of the sample with 0.5 wt.% Al2O3 (ScSZ-0.5A) is about 400 MPa, which is 20% higher than pure ScSZ. The ScSZ-0.5A electrolyte film fabricated by water-based tape casting method shows appropriate electrical conductivity and high mechanical strength, which is promising for the practical application in solid oxide fuel cells (SOFCs).


2016 ◽  
Vol 41 (40) ◽  
pp. 18203-18206 ◽  
Author(s):  
Juan Zhou ◽  
Qinglin Liu ◽  
Lan Zhang ◽  
Siew Hwa Chan

2014 ◽  
Vol 5 (3) ◽  
pp. 273-278 ◽  
Author(s):  
J. F. Beltran-Lopez ◽  
M. A. Laguna-Bercero ◽  
J. Gurauskis ◽  
J. I. Peña

2018 ◽  
Vol 783 ◽  
pp. 79-87 ◽  
Author(s):  
Young Jin Kwon ◽  
Young Bae Han

The hydrogen is promising energy carrier due to its high energy density, convenient transportation, eternal sources in the earth and cleanness. Solid oxide fuel cells (SOFCs) have not been commercialized yet even though it has been studied for decades. The issues about solid oxide fuel cells are manufacturing process and electrochemical performance. Tape-casting process has an advantage of cost reduction for mass production. it is reported that infiltration improves electrochemical performance of SOFCs by enhancing the three phase boundary (TPB) and porosity. To fabricate the electrode with porous scaffold structure for infiltration, pore formers were added in the tape-casting slurry. In this study, four types of mixtures of several pore formers such as carbon black, graphite, poly methyl methacrylate and glassy carbon were estimated. Micro structure of each type is investigated through scanning electron microscope (SEM). The thickness of the unit cell manufactured by tape-casting is in the range of 200 - 250 μm. The fabricated unit cell with carbon black and glassy carbon shows the open circuit voltage 1.07 V at 800°C. As a result of the study, mixed ratio of pore formers was researched for Solid Oxide Fuel Cells manufacturing process applied by tape-casting and infiltration method.


2014 ◽  
Vol 39 (5) ◽  
pp. 2313-2319 ◽  
Author(s):  
Jae-ha Myung ◽  
Hyun Jun Ko ◽  
Chang Hyeok Im ◽  
Jooho Moon ◽  
Sang-Hoon Hyun

2007 ◽  
Vol 437 (1-2) ◽  
pp. 264-268 ◽  
Author(s):  
Zhenrong Wang ◽  
Jiqin Qian ◽  
Jiadi Cao ◽  
Shaorong Wang ◽  
Tinglian Wen

2003 ◽  
Vol 423-425 ◽  
pp. 449-452
Author(s):  
Ji Gui Cheng ◽  
Hai Bin Li ◽  
Xing Qin Liu ◽  
Guang Yao Meng

2007 ◽  
Vol 539-543 ◽  
pp. 1315-1320 ◽  
Author(s):  
Norbert H. Menzler ◽  
Hans Peter Buchkremer ◽  
Johannes Ernst ◽  
Ralf Kauert ◽  
Jürgen Ruska ◽  
...  

Due to their direct conversion of electrochemical into electrical energy solid oxide fuel cells (SOFCs) have great potential for a future additional energy supply. Even in the last two years numerous developers of SOFCs, both industry and research institutions, have demonstrated long-term stable operation of stacks of various dimensions (ranging from 1 to 125 kWel, with durations of up to 25000 hours of operation). Besides technical proof, single component availability (cells, bipolar plates, sealing…), stable and low-aging operation, as well as cost efficient manufacturing of the components is becoming more and more evident in preparation for a market launch. Close cooperation between SOFC stack developers, SOFC users and manufacturers of powders, semifinished parts or stack components is a prerequisite for success. Within a collaboration project funded by the German Federal Ministry of Economics and Labor (BMWA) the development of an SOFC as an auxiliary power unit (APU) is being promoted. The industrial users are BMW for automotive applications and Liebherr for use in construction vehicles or aircraft. The content of this presentation will be the transfer of the manufacturing knowledge developed at Research Center Jülich to CeramTec; including on the one hand the problems and limitations and, on the other hand the successes and positive perceptions. In detail, the transfer of, for example tape casting and screen printing will be addressed, powder characteristics concerning paste or slip formulation and special tests with reference to SOFCs are presented, and single cell tests of various cells manufactured with different powders or fabrication processes are described. Additionally, some remarks will concern different priorities in either R&D or industry (e.g. R&D: high power density; industry: reproducibility), process windows for manufacturing and the search for alternative fabrication methods.


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