One-chamber solid oxide fuel cell constructed from a YSZ electrolyte with a Ni anode and LSM cathode

2000 ◽  
Vol 127 (1-2) ◽  
pp. 89-98 ◽  
Author(s):  
T Hibino
Author(s):  
W.T. Ju ◽  
S.H. Hong

Abstract The atmospheric pressure plasma spray processes for functional layers of the tubular solid oxide fuel cell are developed to build a fuel cell structure consisting of air electrode, ceramic electrolyte, and fuel electrode. Further more the characteristics of each film are also investigated. The layers of LSM (La0.65Sr0.35MnO3) air electrode and Ni/8YSZ fuel electrode have porosities of 23 ~32 % sufficient for supplying fuel and oxidant gases efficiently to electrochemical reaction interfaces. The measured electrical conductivities of the electrodes are higher than 90 S/cm at 1000 °C, which satisfy the requirement as the current collecting electrodes. The YSZ electrolyte film has a high ionic conductivity of 0.07 S/cm at 1000 °C, but shows a bit too porous to block the oxygen molecule penetration through it. A unit tubular SOFC is fabricated by the optimized plasma spray processes for depositing each functional film and forming a porous cylindrical supporting tube of the cell, and turns out to have a promising capability of electricity generation.


2010 ◽  
Vol 124 (2-3) ◽  
pp. 1015-1021 ◽  
Author(s):  
Roberta G. Toro ◽  
Davide M.R. Fiorito ◽  
Maria E. Fragalà ◽  
Antonio Barbucci ◽  
Maria P. Carpanese ◽  
...  

2009 ◽  
Vol 70 (1) ◽  
pp. 164-168 ◽  
Author(s):  
Weiwei Sun ◽  
Xiqiang Huang ◽  
Zhe Lü ◽  
Lijun Zhao ◽  
Bo Wei ◽  
...  

Shinku ◽  
2007 ◽  
Vol 50 (3) ◽  
pp. 214-216 ◽  
Author(s):  
Norikazu SASAKI ◽  
Kentaro OKAMURA ◽  
Takeshi KIMURA ◽  
Akiyoshi NAGATA

Applied Nano ◽  
2020 ◽  
Vol 1 (1) ◽  
pp. 14-24
Author(s):  
Javier Zamudio-García ◽  
Nerea Albarrán-Aroca ◽  
José M. Porras-Vázquez ◽  
Enrique R. Losilla ◽  
David Marrero-López

The efficiency of solid oxide fuel cell cathodes can be improved by microstructural optimization and using active layers, such as doped bismuth oxides. In this work, Bi1.5Y0.5O3 (BYO) films are prepared by spray-pyrolysis deposition at reduced temperatures on a Zr0.84Y0.16O1.92 (YSZ) electrolyte. The influence of the BYO film on the performance of an La0.8Sr0.2MnO3 (LSM) cathode prepared by traditional screen-printing and spray-pyrolysis is investigated. A complete structural, morphological, and electrochemical characterization is carried out by X-ray diffraction, electron microscopy, and impedance spectroscopy. The incorporation of BYO films decreases the Area Specific Resistance (ASR) of screen-printed cathodes from 6.4 to 2.2 Ω cm2 at 650 °C. However, further improvements are observed for the nanostructured electrodes prepared by spray-pyrolysis with ASRs of 0.55 and 1.15 Ω cm2 at 650 °C for cathodes with and without an active layer, respectively. These results demonstrate that microstructural control using optimized fabrication methods is desirable to obtain high-efficiency electrodes for solid oxide fuel cell (SOFC) applications.


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