Microstructure Degradation of Solid Oxide Fuel Cells Aged in Stack after Long Operation Time up to 20 000h Using 3D Reconstructions by FIB Tomography

2017 ◽  
Vol 77 (10) ◽  
pp. 17-25 ◽  
Author(s):  
Atef Zekri ◽  
Martin Knipper ◽  
Jürgen Parisi ◽  
Thorsten Plaggenborg
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Operation Time ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
3D Reconstructions ◽  
Long Operation

Microstructure degradation of Ni/CGO anodes for solid oxide fuel cells after long operation time using 3D reconstructions by FIB tomography

2017 ◽  
Vol 19 (21) ◽  
pp. 13767-13777 ◽  
Author(s):  
Atef Zekri ◽  
Martin Knipper ◽  
Jürgen Parisi ◽  
Thorsten Plaggenborg
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Operation Time ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
3D Reconstructions ◽  
Anode Microstructure ◽  
Sofc Anode ◽  
Long Operation

The 3D reconstructions of SOFC anode microstructure aged up to 20 000 h under realistic conditions was carried out with FIB/SEM tomography in order to calculate the microstructure key parameters.

Microstructure Degradation of LSM/YSZ Cathodes for Solid Oxide Fuel Cells Aged in Stack after Long Operation Time

2017 ◽  
Vol 164 (13) ◽  
pp. F1385-F1391 ◽  
Author(s):  
Atef Zekri ◽  
Bernhard Schnetger ◽  
Mohamed Amine Essafi ◽  
Thorsten Plaggenborg ◽  
Jürgen Parisi ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Operation Time ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Long Operation

Ni0.75Co0.25/(Gd2O3–CeO2) Anodes for Solid Oxide Fuel Cells

2013 ◽  
Vol 545 ◽  
pp. 115-121
Author(s):  
Jiratchaya Ayawanna ◽  
Kazunori Sato ◽  
Darunee Wattanasiriwech ◽  
Suthee Wattanasiriwech
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Power Density ◽  
Polarization Resistance ◽  
Anodic Polarization ◽  
Sintering Temperature ◽  
Operation Time ◽  
Cell Types ◽  
Solid Oxide ◽  
Oxide Fuel

Electrochemical performance of solid oxide fuel cells based on Ni0.75Co0.25-GDC (Gd0.1Ce0.9O1.95) and Ni-GDC anodes were investigated and compared in order to understand the effects of (i) alloying Ni with Co and (ii) anode microstructure on the cell performance under hydrogen fuel. At the sintering temperature of 1300°C for 5 h, the Ni0.75Co0.25-GDC anode showed a superior distribution and connection of grains to the Ni-GDC anode which had grain clustering structure in general. Grain growth and connection were found in both anodes when the sintering temperature was increased to 1350°C for 3 h. This resulted in significant improvement of the anodic polarization resistance for the Ni-GDC anode but only minor change for the Ni0.75Co0.25-GDC anode. This research, however, showed that the Ni-GDC anode had higher anodic polarization resistance than the Ni0.75Co0.25-GDC anode, resulting in the better cell power density at all sintering conditions. The maximum power density obtained at 800°C for the cell with the Ni0.75Co0.25-GDC anode was 118 mW•cm-2. Impedance spectroscopy analysis showed that the total cell resistance of both cell types became progressively larger when the operation time was prolonged to 10 h at 800°C, while the microstructure change was not observable by the SEM. The reason for the fast degradation will thus require further investigation.

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
Sign in / Sign up

Export Citation Format

Share Document