scholarly journals Degradation Comparison of Cyclic and Linear Siloxane Contamination on Solid Oxide Fuel Cells Ni-YSZ Anode

2021 ◽  
Vol 9 ◽  
Author(s):  
Jiashen Tian ◽  
Ryan J. Milcarek
Keyword(s):  
Solid Oxide Fuel Cells ◽  
Linear Structure ◽  
Deposition Process ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Cyclic Siloxane ◽  
Raman Analysis ◽  
Different Types ◽  
Surface Hydroxylation ◽  
Anode Degradation

The solid oxide fuel cell (SOFC) nickel-yttria stabilized zirconia (Ni-YSZ) anode degradation due to different types of siloxane contamination is investigated. A cyclic structure siloxane, octamethylcyclotetrasiloxane (D4), and a linear structure siloxane, decamethyltetrasiloxane (L4), are mixed with H2+N2 as the fuel for SOFCs at 750°C. The electrochemical characterization results after stability experiments suggest that the SOFC contaminated with cyclic siloxane, D4, had higher degradation. Pure YSZ pellets with different surface hydroxylation extents were also tested to investigate the D4/L4 adsorption and deposition process. Postmortem SEM/WDS, XRD and Raman analysis all indicate that cyclic siloxane has more deposition than linear siloxane on the anode. Further analysis demonstrates that high adsorption and low desorption rates of cyclic siloxane on YSZ are linked to the degradation. Besides the silicon deposition, SiC and amorphous carbon deposition were also observed from the XRD and Raman analysis.

The effect of oxygen transfer mechanism on the cathode performance based on proton-conducting solid oxide fuel cells

2015 ◽  
Vol 3 (5) ◽  
pp. 2207-2215 ◽  
Author(s):  
Jie Hou ◽  
Jing Qian ◽  
Lei Bi ◽  
Zheng Gong ◽  
Ranran Peng ◽  
...  
Keyword(s):  
Solid Oxide Fuel Cells ◽  
Cathode Materials ◽  
Oxygen Transfer ◽  
Composite Cathode ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Different Types ◽  
Effect Of Oxygen ◽  
First Time ◽  
Transfer Mechanisms

Two different types of proton-blocking composite cathode materials with different oxygen transfer mechanisms used for H-SOFCs were evaluated for the first time.

Porous Thin-Film Anode Materials for Solid-Oxide fuel Cells

1999 ◽  
Vol 575 ◽  
Author(s):  
Jeffrey D. Morse ◽  
Robert T. Graff ◽  
Jeffrey P. Hayes ◽  
Alan F. Jankowski
Keyword(s):  
Thin Film ◽  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Physical Vapor Deposition ◽  
Deposition Process ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Anode Layer ◽  
Voltage Measurement ◽  
Reactive Gases

ABSTRACTThin film, solid-oxide fuel cells (TFSOFCs) synthesized from an electrolyte and conductive material are developed using photolithographic patterning and physical vapor deposition. The anode layer must enable combination of the reactive gases, be conductive to pass the electric current, and provide mechanical support to the electrolyte and cathode layers. The microstructure and morphology desired for the anode layer should facilitate generation of maximum current density from the fuel cell. For these purposes, the parameters of the deposition process and post-deposition patterning are developed to optimize a continuous porosity across the anode layer. The anode microstructure is characterized using scanning electron microscopy and the power ouput generated through current-voltage measurement.

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

CROFER 22 H

Alloy Digest ◽  
2012 ◽  
Vol 61 (5) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Solid Oxide Fuel Cells ◽  
High Performance ◽  
Heat Treating ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
High Mechanical Strength ◽  
Excellent Corrosion Resistance ◽  
Niobium Titanium ◽  
Processing Properties

Abstract Crofer 22 H is an improved high performance material for use in high-temperature solid oxide fuel cells (SOFCs). The alloy contains 20% to 24% chromium plus tungsten, niobium, titanium, and lanthanum. It has excellent corrosion resistance at temperatures to 900 C (1652 F), good electrical conductivity of the oxide layer, and high mechanical strength at service temperature. It also has good processing properties. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-1121. Producer or source: ThyssenKrupp VDM GmbH.

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