Effect of Oxygen Depletion Along the Air Channel of a PEMFC on the Warburg Diffusion Impedance

2010 ◽  
Vol 157 (11) ◽  
pp. B1561 ◽  
Author(s):  
J. Mainka ◽  
G. Maranzana ◽  
J. Dillet ◽  
S. Didierjean ◽  
O. Lottin
Keyword(s):  
Oxygen Depletion ◽  
Air Channel ◽  
Diffusion Impedance ◽  
Effect Of Oxygen

scholarly journals Single-Cell Tests to Explore the Reliability of Sofc Installations Operating Offshore

Energies ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1624
Author(s):  
Nelson Thambiraj ◽  
Ivar Waernhus ◽  
Crina Suciu ◽  
Arild Vik ◽  
Alex C. Hoffmann
Keyword(s):  
Cell Structure ◽  
Oxygen Depletion ◽  
X Ray Diffraction ◽  
Short Term ◽  
Sem Images ◽  
Cathode Degradation ◽  
Air Supply ◽  
Different Temperatures ◽  
Effect Of Oxygen

This paper studies the robustness of off-shore solid oxide fuel cell (SOFC) installations and the nature and causes of possible cell degradation in marine environments. Two important, cathode-related, impediments to ensuring SOFC reliability in off-shore installations are: cathode degradation due to salt contamination and oxygen depletion in the air supply. Short-term and long-term tests show the effect of salt contamination in the cathode feed on cell performance, and reveal the underlying cause of the degradation seen. SEM/X-ray Diffraction/(XRD) analyses made it possible to identify salt taken up in the cathode microstructure after the short-term testing while the macroscopic cell structure remained intact after the short-term tests. The long-term degradation was found to be more severe, and SEM images showed delamination at the cathode/electrolyte interface with salt present, something that was not seen after long-term testing without salt. The effect of oxygen depletion on the performance was also determined at three different temperatures using I-V curves.

scholarly journals The effects of oxygen depletion due to upwelling groundwater on the posthatch fitness of Atlantic salmon (Salmo salar)

2016 ◽  
Vol 73 (12) ◽  
pp. 1830-1840 ◽  
Author(s):  
Jack Bloomer ◽  
David Sear ◽  
Peter Dutey-Magni ◽  
Paul Kemp
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Oxygen Depletion ◽  
Hyporheic Exchange ◽  
Fine Scale ◽  
Review Of The Literature ◽  
Low Oxygen ◽  
Atlantic Salmon Salmo Salar ◽  
Effect Of Oxygen ◽  
Scale Control

The conditions experienced by incubating Atlantic salmon (Salmo salar) eggs are strongly influenced by hyporheic exchange. In some rivers, periods of intense groundwater upwelling can reduce oxygen levels in the incubation zone to 0% saturation. The present study investigated the effect of oxygen sags on the posthatch fitness of Atlantic salmon. A laboratory experiment allowed fine-scale control of oxygen concentrations to replicate those induced by low oxygen groundwater in rivers. Extreme oxygen sags in the earlier stages of embryo development resulted in a developmental lag with alevin hatching later and at an underdeveloped state. At the latest stages of development, oxygen sags caused premature hatching of severely underdeveloped alevin. These findings combined with a review of the literature suggest posthatch survival of embryos exposed to groundwater-induced hypoxia will be lower because of predation and poor competitiveness.

Effect of Oxygen Depletion to the Cathode on the Working of Solid Oxide Fuel Cells

2017 ◽  
Vol 78 (1) ◽  
pp. 875-887 ◽  
Author(s):  
Nelson Thambiraj ◽  
Crina Suciu ◽  
Ivar Waernhus ◽  
Arild Vik ◽  
Alex C. Hoffmann
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Oxygen Depletion ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Effect Of Oxygen

scholarly journals Assessment of microalgae and nitrifiers activity in a consortium in a continuous operation and the effect of oxygen depletion

2016 ◽  
Vol 23 ◽  
pp. 63-68 ◽  
Author(s):  
Gustavo Vargas ◽  
Andrés Donoso-Bravo ◽  
Christian Vergara ◽  
Gonzalo Ruiz-Filippi
Keyword(s):  
Oxygen Depletion ◽  
Continuous Operation ◽  
Effect Of Oxygen

Effect of Oxygen Depletion on the Pinning Properties of ${\rm YBa}_{2}{\rm Cu}_{3}{\rm O}_{\rm x}$ Films With Nanoinclusions

2011 ◽  
Vol 21 (3) ◽  
pp. 3218-3221
Author(s):  
E. Cimpoiasu ◽  
T. J. Haugan ◽  
C. V. Varanasi ◽  
G. A. Levin ◽  
P. N. Barnes
Keyword(s):  
Oxygen Depletion ◽  
Effect Of Oxygen ◽  
Pinning Properties
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