Oxidation of Hydrogen on Ni/Yttria‐Stabilized Zirconia Cermet Anodes

1997 ◽  
Vol 144 (10) ◽  
pp. 3409-3419 ◽  
Author(s):  
S. Primdahl ◽  
M. Mogensen
Keyword(s):  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Oxidation Of Hydrogen ◽  
Zirconia Cermet

scholarly journals Improved Electrochemical Properties of an Ni-Based YSZ Cermet Anode for the Direct Supply of Methane by Co Alloying with an Impregnation Method

Ceramics ◽  
2020 ◽  
Vol 3 (1) ◽  
pp. 114-126
Author(s):  
Nicharee Wongsawatgul ◽  
Soamwadee Chaianansutcharit ◽  
Kazuhiro Yamamoto ◽  
Makoto Nanko ◽  
Kazunori Sato
Keyword(s):  
Solid Oxide Fuel Cells ◽  
Performance Enhancement ◽  
Yttria Stabilized Zirconia ◽  
Cell Performance ◽  
Impregnation Method ◽  
Stabilized Zirconia ◽  
Porous Microstructure ◽  
Zirconia Cermet ◽  
Ysz Electrolyte ◽  
Porous Anode

To avoid the proneness to degradation due to coking in the operation of solid oxide fuel cells (SOFCs) directly running on methane (CH4) fuels, a modified porous anode of the Ni1−XCoX/YSZ (yttria-stabilized zirconia) cermet prepared by an impregnation method is presented. The influence of the Co alloying content on the cermet microstructure, SOFC characteristics, and prolonged cell performance stability has been studied. Co was incorporated into Ni and formed a solid solution of Ni1−XCoX alloy connected with the YSZ as the cermet anode. The porous microstructure of the Ni1−XCoX/YSZ cermet anode formed by sintering exhibited a grain growth with an increase in the Co alloying content. The electrochemical performance of the cells consisting of the Ni1−XCoX/YSZ cermet anode, the YSZ electrolyte, and the LSM (La0.8Sr0.2MnO3) cathode showed an enhancement by the Ni1−XCoX impregnation treatment for the respective supply of H2 and CH4 to the anode. The cell using the Ni0.75Co0.25/YSZ cermet anode (the Ni0.75Co0.25 cell) showed the highest cell performance among the cells tested. In particular, the performance enhancement of this cell was found to be more significant for CH4 than that for H2; a 45% increase in the maximum power density for CH4 and a 17% increase for H2 at 750 °C compared with the performance of the cell using the Ni/YSZ cermet anode. Furthermore, the prolonged cell performance stability with a continuous CH4 supply was found for the Ni0.85Co0.15 and Ni0.75Co0.25 cells at least for 60 h at 750 °C. These enhancement effects were caused by the optimum porous microstructure of the cermet anode with the low anodic polarization resistance.

scholarly journals A high-performance spectrally-selective solar absorber based on a yttria-stabilized zirconia cermet with high-temperature stability

2015 ◽  
Vol 8 (10) ◽  
pp. 3040-3048 ◽  
Author(s):  
Feng Cao ◽  
Daniel Kraemer ◽  
Lu Tang ◽  
Yang Li ◽  
Alexander P. Litvinchuk ◽  
...  
Keyword(s):  
High Performance ◽  
Temperature Stability ◽  
High Thermal Stability ◽  
Yttria Stabilized Zirconia ◽  
High Temperature Stability ◽  
Stabilized Zirconia ◽  
Solar Absorptance ◽  
Solar Absorber ◽  
Spectrally Selective ◽  
Zirconia Cermet

We demonstrate a W–Ni–YSZ cermet-based solar absorber with high solar absorptance, low infrared emittance and high thermal stability up to 600 °C.

Effect of the Steam‐Methane Ratio on Reactions Occurring on Ni/Yttria‐Stabilized Zirconia Cermet Anodes Used in Solid‐Oxide Fuel Cells

1999 ◽  
Vol 146 (7) ◽  
pp. 2481-2487 ◽  
Author(s):  
Manabu Ihara ◽  
Chiaki Yokoyama ◽  
Abulet Abudula ◽  
Ryuzaburo Kato ◽  
Hiroshi Komiyama ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Yttria Stabilized Zirconia ◽  
Oxide Fuel ◽  
Stabilized Zirconia ◽  
Steam Methane ◽  
Zirconia Cermet
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