Electrochemical Performance of Solid Oxide Fuel Cells Manufactured by Single Step Co-firing Process

2007 ◽  
Vol 154 (4) ◽  
pp. B389 ◽  
Author(s):  
Kyung Joong Yoon ◽  
Wenhua Huang ◽  
Guosheng Ye ◽  
Srikanth Gopalan ◽  
Uday B. Pal ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Electrochemical Performance ◽  
Solid Oxide Fuel Cells ◽  
Single Step ◽  
Solid Oxide ◽  
Firing Process ◽  
Oxide Fuel

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.

Thermal Cycling Evaluation of Rolled Tubular Solid Oxide Fuel Cells

2011 ◽  
Vol 8 (6) ◽  
Author(s):  
Alem Tesfai ◽  
Paul Connor ◽  
Julie Nairn ◽  
John T. S. Irvine
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Thermal Cycling ◽  
Low Cost ◽  
Tape Casting ◽  
Single Step ◽  
Solid Oxide ◽  
Firing Process ◽  
Oxide Fuel ◽  
Heating And Cooling

Rolled tubular solid oxide fuel cells are manufactured in a low-cost single step firing process, so the design offers reduced production cost. All components are produced using a low cost tape casting method and are fired as a single unit. The geometry is self–supporting which removes the need for thick cell components further reducing cell cost and offering increased volumetric power densities. Here we present the results from some early studies on the influence of fast thermal cycling on performance characteristics. Thermal cycles were carried out heating and cooling at 10 °C min−1 between 400 and 800 °C. Less than 1% performance drop was calculated for the single cell and 5% drop was observed on the fourth cycle for the five cell bundle.

Surface Modification Allows High Performance for Solid Oxide Fuel Cells Fabricated by a Single-step Co-firing Process

Fuel Cells ◽  
2017 ◽  
Vol 17 (6) ◽  
pp. 905-908 ◽  
Author(s):  
H. Dai ◽  
Y. Ning ◽  
S. He ◽  
X. Zhang ◽  
L. Guo ◽  
...  
Keyword(s):  
Surface Modification ◽  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
High Performance ◽  
Single Step ◽  
Solid Oxide ◽  
Firing Process ◽  
Oxide Fuel

Proton-conducting solid oxide fuel cells prepared by a single step co-firing process

2009 ◽  
Vol 191 (2) ◽  
pp. 428-432 ◽  
Author(s):  
Lei Bi ◽  
Zetian Tao ◽  
Wenping Sun ◽  
Shangquan Zhang ◽  
Ranran Peng ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Single Step ◽  
Solid Oxide ◽  
Firing Process ◽  
Oxide Fuel ◽  
Proton Conducting
Sign in / Sign up

Export Citation Format

Share Document