Effect of heat-conducting properties of spacers on current-voltage characteristics and temperature fields of thermionic fuel cells

1980 ◽  
Vol 49 (2) ◽  
pp. 595-598 ◽  
Author(s):  
N. M. Rozhkova ◽  
V. V. Sinyavskii
Keyword(s):  
Fuel Cells ◽  
Temperature Fields ◽  
Heat Conducting ◽  
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.

Influence of Ultrasonic Waves on Current-Voltage Characteristics and Polarization Effects of Si-N-P Radiation Receivers

2022 ◽  
Vol 1049 ◽  
pp. 317-324
Author(s):  
Abdumalik G. Gaibov ◽  
K.I. Vakhobov ◽  
B.V. Ibragimova ◽  
U.E. Zhuraev ◽  
D.T. Rasulova
Keyword(s):  
Signal Amplitude ◽  
Ultrasonic Waves ◽  
Charge Carriers ◽  
Temperature Fields ◽  
Physical Processes ◽  
Polarization Effects ◽  
Impurity Atoms ◽  
Current Voltage ◽  
Temperature Dependences ◽  
Current Voltage Characteristics

The currents of n-p junctions and polarization effects caused by the capture processes of diffusion Si-receivers (detectors) of radiation exposed by ultrasound have been analyzed in this work. It was found that there are local concentrations of impurity atoms with an effective size l>6μm30μm in Si-n-p radiation receivers. They determine the behavior of the signal amplitude in different intervals of electric and temperature fields. It was found that at Е>1500V/cm and T>168K, the efficiency of collecting nonequilibrium charge carriers significantly increases and doublets of spectral α-lines and “humps” disappear at the temperature dependences of the signal amplitude. The main physical processes and mechanisms that determine the appearance of the phenomenon of "polarization" of Si-n-p-detectors were investigated. This phenomenon is caused by the existence of local gold atoms, which arise in the process of manufacturing technology of Si-n-p-receivers and act as effective trapping centers.

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

Structure and Current-Voltage Characteristics of Islet Gold Films on High-Heat Conducting Pressureless Sintered AlN Ceramics

2018 ◽  
Vol 40 (6) ◽  
pp. 432-434 ◽  
Author(s):  
I. P. Fesenko ◽  
L. B. Viduta ◽  
V. I. Chasnyk ◽  
V. B. Nechytailo ◽  
D. V. Butenko ◽  
...  
Keyword(s):  
High Heat ◽  
Gold Films ◽  
Heat Conducting ◽  
Current Voltage ◽  
Current Voltage Characteristics
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