The Study of the Solid Polymer Electrolyte Oxygen Concentrator with Nanostructural Catalysts Based on Hydrophobized Support

The efficient production of gaseous oxygen used in many branches of industry to provide human life in anaerobic environments and in medicine (e.g., in the case of acute respiratory failure as one of COVID-19 complications) is challenging nowadays. The electrochemical oxygen pump (concentrator) with...

Full description

Saved in:
Bibliographic Details
Published in:Nanobiotechnology Reports (Online) 2020, Vol.15 (11-12), p.785-792
Main Authors: Pushkarev, A. S., Pushkareva, I. V., Solovyev, M. A., Butrim, S. I., Grigoriev, S. A.
Format: Article
Language:English
Subjects:
Air temperature
Catalysts
Cathodes
Chemistry and Materials Science
Concentrators
Depolarization
Devices and Products Based on Nanomaterials and Nanotechnologies
Electrolytes
Energy consumption
Flooding
Flow velocity
Industrial and Production Engineering
Machines
Manufacturing
Materials Science
Nanotechnology
Oxygen production
Polymers
Polytetrafluoroethylene
Portable equipment
Processes
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The efficient production of gaseous oxygen used in many branches of industry to provide human life in anaerobic environments and in medicine (e.g., in the case of acute respiratory failure as one of COVID-19 complications) is challenging nowadays. The electrochemical oxygen pump (concentrator) with a solid polymer electrolyte representing an electrolyzer with air cathode depolarization is a very promising device, which provides the portable, safe, and efficient in situ production of highly pure oxygen at a twice lower energy consumption as compared to the water electrolyzer with a solid polymer electrolyte. The effect produced by the hydrophobization of a nanostructured oxygen reduction catalyst on the oxygen pump characteristics and the endurance of a cathode catalytic layer to flooding has been considered. The modification of a carbon support with polytetrafluoroethylene particles improves the removal of excessive water from the catalytic layer and increases the limiting current characterizing the appearance of transport limitations. The operational parameters (air temperature, flow rate, and pressure) also have an essential effect on the oxygen pump performance and must be optimized to improve water transport in catalytic layers, increase the operating current densities, and reduce the energy consumption in oxygen production.
ISSN:1995-0780
1995-0799
DOI:10.1134/S1995078020060154