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Air-breathing versus conventional polymer electrolyte fuel cells: A parametric numerical study
- Publication Year :
- 2022
- Publisher :
- Elsevier, 2022.
-
Abstract
- Two mathematical models have been built for air-breathing and conventional polymer electrolyte fuel cells to explore the reasons affecting the cell performance. A parametric study has been conducted to (i) investigate how each type of fuel cells responds to changes in some key parameters and (ii) consequently obtain some insights on how to improve the performance of the air-breathing fuel cell. The conventional fuel cell significantly outperforms the air-breathing fuel cell and this is due to substantially higher forced convection-related heat and mass transfer coefficients associated with the conventional fuel cell as compared with natural convection-related heat and mass transfer coefficients associated with airbreathing fuel cell. The two types of fuel cell respond differently to changes in porosity and thickness of gas diffusion layer: the conventional fuel cell performs better with increasing porosity of gas diffusion layer (from 0.4 to 0.8) and decreasing thickness of gas diffusion layer (from 700 to 100 mm) while the airbreathing fuel cell performs better with decreasing porosity and increasing thickness of gas diffusion layer. Further, the air-breathing fuel cell was found to be more sensitive to membrane thickness and less sensitive to electrical resistance compared to conventional fuel cell.
- Subjects :
- Design
Energy & Fuels
Air-breathing PEFCs
Electrode
Performance
Heat and mass transfer
Chemistry - Electrochemistry - Proton Conductivity
Pemfc
Mass-transfer
Industrial and Manufacturing Engineering
Polymer electrolyte fuel cells
Diffusion in Gases
Conventional polymers
Electrical and Electronic Engineering
Civil and Structural Engineering
Air-breathing PEFC
Conventional fuel
Mechanical Engineering
Gas fuel purification
Conventional PEFC
Conventional PEFCs
Building and Construction
Proton exchange membrane fuel cells (PEMFC)
Pollution
Polyelectrolytes
Air breathing
General Energy
Heat and mass transfer coefficients
Natural convection
Gas diffusion layers
Thermodynamics
Cathode
Solid electrolytes
Cell performance
Planar
Forced convection
Porosity
Proton Exchange Membrane Fuel Cell (PEMFC)
Model
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....071a3e1ab121e044e68b59d230d5484f