Electrolyte and water transfer through the porous electrodes of an immobilised-alkali hydrogen-oxygen fuel cell

This study concerns the performance of a hydrogen-oxygen fuel cell with an immobilized alkaline electrolyte, intended for use in space applications. After optimization of the hydrogen flow rate allowing the precise removal of the water produced by the overall reaction of the cell, the question of el...

Full description

Saved in:
Bibliographic Details
Published in:International journal of hydrogen energy 1996, Vol.21 (1), p.25-31
Main Authors: Khalidi, A., Lafage, B., Taxil, P., Gave, G., Clifton, M.J., Cézac, P.
Format: Article
Language:English
Subjects:
Alternative fuels. Production and utilization
Applied sciences
Electrodes
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Fuel cells
Fuels
Hydrogen
Ions
Oxygen
Q1
Water
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This study concerns the performance of a hydrogen-oxygen fuel cell with an immobilized alkaline electrolyte, intended for use in space applications. After optimization of the hydrogen flow rate allowing the precise removal of the water produced by the overall reaction of the cell, the question of electrolyte transfer at the cathode is approached. During long-term operation of the cell, the reaction brings about the accumulation of OH − ions in the reaction zone and the expulsion of electrolyte into the oxygen compartment, known as the weeping effect. It is shown that this phenomenon can be avoided by dampening the oxygen at the cell inlet. The moisture level is a critical factor and optimization studies are also necessary if the performance of the cell is to be maintained.
ISSN:0360-3199
1879-3487
DOI:10.1016/0360-3199(95)00040-K