scholarly journals The effect of anode support on the electrochemical performance of microtubular solid oxide fuel cells fabricated by gel-casting

RSC Advances ◽  
2015 ◽  
Vol 5 (49) ◽  
pp. 39350-39357 ◽  
Author(s):  
M. Morales ◽  
M. A. Laguna-Bercero ◽  
M. E. Navarro ◽  
F. Espiell ◽  
M. Segarra
Keyword(s):  
Fuel Cells ◽  
Electrochemical Performance ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Doped Ceria ◽  
Oxide Fuel ◽  
Gel Casting ◽  
Anode Support

Different cell configurations of anode-supported microtubular solid oxide fuel cells (mT-SOFCs) using samaria-doped ceria (SDC) as the electrolyte were fabricated.

Electrochemical performance of nanocrystalline nickel/gadolinia-doped ceria thin film anodes for solid oxide fuel cells

2008 ◽  
Vol 178 (33-34) ◽  
pp. 1762-1768 ◽  
Author(s):  
U MUECKE ◽  
K AKIBA ◽  
A INFORTUNA ◽  
T SALKUS ◽  
N STUS ◽  
...  
Keyword(s):  
Thin Film ◽  
Fuel Cells ◽  
Electrochemical Performance ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Doped Ceria ◽  
Oxide Fuel ◽  
Nanocrystalline Nickel

scholarly journals Microtubular solid oxide fuel cells fabricated by gel-casting: the role of supporting microstructure on the mechanical properties

RSC Advances ◽  
2017 ◽  
Vol 7 (29) ◽  
pp. 17620-17628 ◽  
Author(s):  
M. Morales ◽  
M. A. Laguna-Bercero
Keyword(s):  
Mechanical Properties ◽  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Doped Ceria ◽  
Oxide Fuel ◽  
Gel Casting

Different cell configurations of anode-supported microtubular solid oxide fuel cells (mT-SOFCs) using samaria-doped ceria (SDC) as the electrolyte were fabricated.

Controlling Porosity of Anode Support in Tubular Solid Oxide Fuel Cells by Freeze Casting

2020 ◽  
Vol 17 (4) ◽  
Author(s):  
Benjamin Emley ◽  
Dhruba Panthi ◽  
Yanhai Du ◽  
Yan Yao
Keyword(s):  
Fuel Cells ◽  
Electrochemical Performance ◽  
Solid Oxide Fuel Cells ◽  
Concentration Polarization ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Freeze Casting ◽  
Lanthanum Strontium Manganite ◽  
Functional Layer ◽  
Anode Support

Abstract Precise porosity control is highly desirable for improving the electrochemical performance of solid oxide fuel cells (SOFCs). Freeze casting is an established method for enabling high bulk porosity in structures and controlling pore orientation. In this study, freeze casting was used to fabricate tubular, anode-supported SOFCs with aligned and varying amounts of porosity by controlling the solids/water ratio in different casting slurries. SOFCs were prepared with a Ni/yttria and scandia stabilized zirconia (ScYSZ) anode support (AS), an anode functional layer (AFL), a ScYSZ electrolyte, a lanthanum strontium manganite (LSM)/ScYSZ cathode interlayer (CIL), and an LSM cathode. The permeability of the anode support was found to increase from 1.4 × 10−2 to 1.8 × 10−2 m2 as porosity was increased from 57 to 64 vol%, while the total cell resistance decreased by 35% from 0.93 to 0.60 Ohm cm2. When evaluated with 30 vol% H2 as the fuel at 800 °C, the decrease of concentration polarization enabled an increase in electrochemical performance by 42% from 0.35 to 0.50 W/cm2 as the porosity in the anode support was increased. Mechanical strength characterization using a three-point method showed there is a practical upper limit of the amount of porosity that can be designed into the anode support. This work paves a way for controlling porosity by freeze casting and understanding the correlation between porosity and concentration polarization losses in SOFCs.

scholarly journals Processing of composites based on NiO, samarium-doped ceria and carbonates (NiO-SDCC) as anode support for solid oxide fuel cells

2017 ◽  
Vol 11 (3) ◽  
pp. 206-212 ◽  
Author(s):  
Lily Mahmud ◽  
Andanastuti Muchtar ◽  
Somalu Rao ◽  
Abdul Jais
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Doped Ceria ◽  
Oxide Fuel ◽  
Factors Affecting ◽  
Different Temperatures ◽  
Raman Modes ◽  
Carbonate Decomposition ◽  
Anode Support

NiO-SDCC composites consisting of NiO mixed with Sm-doped ceria (SDC) and carbonates (Li2CO3 and Na2CO3) were sintered at different temperatures and reduced at 550?C. The influence of reduction on structure of the NiO-SDCC anode support for solid oxide fuel cells (SOFCs) was investigated. Raman spectra of the NiO-SDCC samples sintered at 500, 600 and 700?C showed that after reducing at 550?C NiO was reduced to Ni. In addition, SDC and carbonates (Li2CO3 and Na2CO3) did not undergo chemical transformation after reduction and were still detected in the samples. However, no Raman modes of carbonates were identified in the NiO-SDCC pellet sintered at 1000?C and reduced at 550?C. It is suspected that carbonates were decomposed at high sintering temperature and eliminated due to the reaction between the CO3 2- and hydrogen ions during reduction in humidified gases at 550?C. The carbonate decomposition increased porosity in the Ni-SDCC pellets and consequently caused formation of brittle and fragile structure unappropriated for SOFC application. Because of that composite NiO-SDC samples without carbonates were also analysed to determine the factors affecting the crack formation. In addition, it was shown that the different reduction temperatures also influenced the microstructure and porosity of the pellets. Thus, it was observed that Ni-SDC pellet reduced at 800 ?C has higher electrical conductivity of well-connected microstructures and sufficient porosity than the pellet reduced at 550?C.

Gadolinium doped ceria nanostructured oxide for intermediate temperature solid oxide fuel cells

2021 ◽  
pp. 160444
Author(s):  
S.U. Costilla-Aguilar ◽  
M.I. Pech-Canul ◽  
M.J. Escudero ◽  
R.F. Cienfuegos-Pelaes ◽  
J.A. Aguilar-Martínez
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Doped Ceria ◽  
Oxide Fuel ◽  
Nanostructured Oxide ◽  
Gadolinium Doped Ceria
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