Fabrication of improved La0.8 Sr0.2 MnO3 cathode layer for solid oxide fuel cells using economical coating methods

2017 ◽  
Vol 15 (2) ◽  
pp. 328-337 ◽  
Author(s):  
Ehsan Javanshir ◽  
Mahdi Mozammel ◽  
Mohammad Tanhaei
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Cathode Layer ◽  
Oxide Fuel ◽  
Coating Methods

Transient Performance of Micro-Tubular Solid Oxide Fuel Cells

2011 ◽  
Vol 8 (3) ◽  
Author(s):  
Katie S. Howe ◽  
Kevin Kendall
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Dip Coating ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Transient Performance ◽  
Voltage Step ◽  
Current Voltage ◽  
Coating Methods ◽  
The Difference

The transient performance of microtubular solid oxide fuel cells was investigated, with promising results. It was found that a single cell can take less than half a second to adjust to load changes, even when the change steps across the majority of the cell’s range. In addition, no undershooting of the voltage step was seen in these tests. When steps of equal size were ranged across the current-voltage spectrum, more distortion was seen at the higher voltages. Cells with cathodes applied by dip-coating (instead of brush-painting) were then dynamically tested in a similar way. Their transient performance was significantly weaker, with visible undershooting and longer re-adjustment times of 10–15 s. This is thought to be due to the difference in the microstructure of the cathode layers made by the different coating methods.

Refractory Cathode Investigation for Single-Step Co-Fired Solid Oxide Fuel Cells (SOFCs)

2006 ◽  
Vol 972 ◽  
Author(s):  
Peter A. Zink ◽  
Kyung Joong Yoon ◽  
Wenhua Huang ◽  
Srikanth Gopalan ◽  
Uday B. Pal ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Barrier Layer ◽  
Single Step ◽  
Solid Oxide ◽  
Cathode Layer ◽  
Firing Process ◽  
Full Density ◽  
Oxide Fuel ◽  
Lanthanum Ferrite

AbstractA single step co-firing process for fabricating solid oxide fuel cells (SOFCs) requires refractory electrodes to prevent excessive sintering of the electrode while facilitating full-density sintering of the electrolyte. Single cell current-potential curves and impedance measurements indicate that the majority of the performance losses occur in the cathode and are due to activation polarization. A-site deficient calcium and cerium doped lanthanum ferrite cathode powders were synthesized and investigated as possible refractory cathode materials with low activation polarization losses. Four-probe conductivity measurements indicated that all compositions were suitable as cathodes. However, reactivity with YSZ reduced the conductivity by as much as two orders of magnitude, too low for use as a cathode. These refractory cathode compositions could be effective if a suitable barrier layer is applied to prevent reaction with YSZ. Experiments will investigate the applicability of a doped-ceria barrier layer to prevent reaction between the lanthanum ferrite cathode layer and the YSZ electrolyte layer.

Structural Change of Cathode with Pore Former Addition in SOFC

2015 ◽  
Vol 1087 ◽  
pp. 299-303
Author(s):  
Muhazri Abd Mutalib ◽  
Mohd Hafiz Dzarfan Othman ◽  
Madzlan Aziz ◽  
Mukhlis A. Rahman ◽  
Juhana Jaafar ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
High Efficiency ◽  
Processing Method ◽  
Solid Oxide ◽  
Bending Test ◽  
Cathode Layer ◽  
Oxide Fuel ◽  
Pore Former ◽  
Fuel Cell Performance

Solid oxide fuel cells (SOFCs) have been considered as a promising electricity-generation technology because of the relatively high efficiency in the conversion of chemical energy to electrical power. The cathode performance of solid oxide fuel cells (SOFC) depends substantially on its surface area, porosity and microstructure, and therefore the processing method used is very important in determining cathode performance. By optimizing the structural characteristic of the layer, the cathode performance during fuel cell performance can be fully maximized. Polyether ether ketone (PEEK) pore former was introduced in the processing method of cathode layer. The cathode layer was brush painted and sintered at 1200°C for 5 hours. TGA analysis is used to specify the sintering curve for the cathode layer. In addition, three point bending test is used to investigate the change in bending force with the addition of pore former. Characterization via FESEM allows inspection over the induced pore geometry and distribution along the layer. The study can produce a comprehensive structural analysis on the pore former addition in the precursor solution of the cathode layer for SOFC application.

Effect of an Anode Functional Layer on Cell Performance of Anode-Supported Solid Oxide Fuel Cells by a Decalcomania Method

2013 ◽  
Vol 51 (2) ◽  
pp. 125-130 ◽  
Author(s):  
Sun-Min Park ◽  
Hae-Ran Cho ◽  
Byung-Hyun Choi ◽  
Yong-Tae An ◽  
Ja-Bin Koo ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Cell Performance ◽  
Oxide Fuel ◽  
Functional Layer

Optimization Rule of Anode Materials for Solid Oxide Fuel Cells

2015 ◽  
Vol 30 (10) ◽  
pp. 1043
Author(s):  
CHANG Xi-Wang ◽  
CHEN Ning ◽  
WANG Li-Jun ◽  
BIAN Liu-Zhen ◽  
LI Fu-Shen ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Anode Materials ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Optimization Rule
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