An Effect of Anodic Reaction on the Current-Voltage Characteristics of Solid Oxide Fuel Cells

1995 ◽  
Vol 24 (10) ◽  
pp. 963-964 ◽  
Author(s):  
Koichi Eguchi ◽  
Yasuhiro Kunisa ◽  
Kentaro Adachi ◽  
Masashi Kayano ◽  
Koshi Sekizawa ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Anodic Reaction ◽  
Current Voltage ◽  
Current Voltage Characteristics

Deposition of a Thin-Film CGO Electrolyte for Solid Oxide Fuel Cells

2016 ◽  
Vol 685 ◽  
pp. 776-780
Author(s):  
Andrey A. Solovyev ◽  
Anastasya N. Kovalchuk ◽  
Igor V. Ionov ◽  
S.V. Rabotkin ◽  
Anna V. Shipilova ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Magnetron Sputtering ◽  
Solid Oxide Fuel Cells ◽  
Operating Temperature ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
Ysz Electrolyte

Reducing the operating temperature of solid oxide fuel cells (SOFCs) from 800-1000°C is one of the main SOFC research goals. It can be achieved by lowering the thickness of an electrolyte (ZrO2:Y2O3 (YSZ) is widely used as electrolyte material). On the other hand the problem can be solved by using of another electrolyte material with high ionic conductivity at intermediate temperatures. Therefore the present study deals with magnetron sputtering of ceria gadolinium oxide (CGO), which has a higher conductivity compared to YSZ. The microstructure of CGO layers deposited on porous NiO/YSZ substrates by reactive magnetron sputtering of Ce:Gd cathode is investigated. Current voltage characteristics (CVC) of a fuel cell with NiO/YSZ anode, CGO electrolyte and LSCF/CGO cathode were obtained. It was shown that the power density of a fuel cell with CGO electrolyte weakly depends on the operating temperature in the range of 650-750°C in contradistinction to YSZ electrolyte, and is about 600-650 mW/cm2.

Current-Voltage Characteristics and Impedance Analysis of Solid Oxide Fuel Cells for Mixed H[sub 2] and CO Gases

2002 ◽  
Vol 149 (3) ◽  
pp. A227 ◽  
Author(s):  
K. Sasaki ◽  
Y. Hori ◽  
R. Kikuchi ◽  
K. Eguchi ◽  
A. Ueno ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Impedance Analysis ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Current Voltage ◽  
Current Voltage Characteristics

Effects of Anode Material and Fuel on Anodic Reaction of Solid Oxide Fuel Cells

1992 ◽  
Vol 139 (10) ◽  
pp. 2875-2880 ◽  
Author(s):  
Toshihiko Setoguchi ◽  
Kotaro Okamoto ◽  
Koichi Eguchi ◽  
Hiromichi Arai
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Anode Material ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Anodic Reaction

Performance Characteristics of Solid Oxide Fuel Cells with YSZ/CGO Electrolyte

2017 ◽  
Vol 743 ◽  
pp. 281-286 ◽  
Author(s):  
Anastasya N. Kovalchuk ◽  
Alexey M. Lebedinskiy ◽  
Andrey A. Solovyev ◽  
Igor V. Ionov ◽  
Egor A. Smolyanskiy ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Screen Printing Method ◽  
Power Characteristics ◽  
Long Term Stability ◽  
Current Voltage ◽  
Bilayer Electrolyte

This paper presents the results of performance evaluation of anode-supported solid oxide fuel cells (SOFC) with magnetron sputtered YSZ/CGO bilayer electrolyte, and composite LSCF-CGO cathode. Deposition of the YSZ/CGO electrolyte with the thickness of up to 14 microns was performed on the commercial anode substrates with dimensions of 5×5 cm2. The LSCF-CGO cathode of the fuel cells was formed by the screen-printing method. The microstructure of the YSZ/CGO bilayer electrolyte and LSCF-CGO cathode was studied by scanning electron microscopy. Comparison of the fuel cells performance with different thicknesses of the YSZ and CGO layers was carried out by measuring current-voltage and power characteristics, and also by testing the long-term stability of cell power at the temperature of 750 °C and voltage of 0.7 V.

Transient Performance of Micro-Tubular Solid Oxide Fuel Cells

2011 ◽  
Vol 8 (3) ◽  
Author(s):  
Katie S. Howe ◽  
Kevin Kendall
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Dip Coating ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Transient Performance ◽  
Voltage Step ◽  
Current Voltage ◽  
Coating Methods ◽  
The Difference

The transient performance of microtubular solid oxide fuel cells was investigated, with promising results. It was found that a single cell can take less than half a second to adjust to load changes, even when the change steps across the majority of the cell’s range. In addition, no undershooting of the voltage step was seen in these tests. When steps of equal size were ranged across the current-voltage spectrum, more distortion was seen at the higher voltages. Cells with cathodes applied by dip-coating (instead of brush-painting) were then dynamically tested in a similar way. Their transient performance was significantly weaker, with visible undershooting and longer re-adjustment times of 10–15 s. This is thought to be due to the difference in the microstructure of the cathode layers made by the different coating methods.

Ni-Fe Bimetallic Anode for Intermediate Temperature Solid Oxide Fuel Cells Using LaGaO3 Based Oxide Electrolyte

2007 ◽  
Vol 539-543 ◽  
pp. 1350-1355 ◽  
Author(s):  
Tatsumi Ishihara ◽  
Masashi Shinagawa ◽  
Akira Kawakami ◽  
Hiroshige Matsumoto
Keyword(s):  
Activation Energy ◽  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
High Dispersion ◽  
Oxide Fuel ◽  
Anodic Reaction ◽  
Highly Active ◽  
Oxide Electrolyte

Effects of various additives to Ni anode on SOFC using La0.9Sr0.1Ga0.8Mg0.2O3 based oxide were investigated in this study. Among the examined additives, it was found that the addition of small amount of Fe is highly effective for increasing the anodic activity. When 5 wt% Fe was added to Ni anode, the anodic overpotential was as small as 34 mV at 873 K, 0.1A/cm2, which is almost half of pure Ni anode. Since the estimated activation energy for anodic reaction decreased, addition of Fe to Ni seems to be effective for increasing the activity of Ni for anodic reaction. XRD measurement after power generating property suggests that added Fe was formed alloy with Ni. SEM observation shows the high dispersion of Ni metal was sustained by addition of small amount of Fe. Consequently, this study reveals that Ni-Fe bimetal is highly active for anodic reaction of SOFCs at decreased temperature.

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
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