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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Investigation of convective transport in the gas diffusion layer used in polymer electrolyte fuel cells

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Author(s):
Beruski, Otavio [1, 2] ; Lopes, Thiago [1, 2, 3] ; Kucernak, Anthony R. J. [3] ; Perez, Joelma [1]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13566590 Sao Carlos, SP - Brazil
[2] IPEN CNEN SP, Nucl & Energy Res Inst, BR-05508000 Sao Paulo, SP - Brazil
[3] Imperial Coll London, Dept Chem, South Kensington Campus, London SW7 2AZ - England
Total Affiliations: 3
Document type: Journal article
Source: PHYSICAL REVIEW FLUIDS; v. 2, n. 10 OCT 17 2017.
Web of Science Citations: 2
Abstract

Recent experimental data on a fuel-cell-like system revealed insights into the fluid flow in both free and porous media. A computational model is used to investigate the momentum and species transport in such a system, solved using the finite element method. The model consists of a stationary, isothermal, diluted species transport in free and porous media flow. The momentum transport is treated using different formulations, namely, Stokes-Darcy, Darcy-Brinkman, and hybrid Stokes-Brinkman formulations. The species transport is given by the advection equation for a reactant diluted in air. The formulations are compared to each other and to the available experimental data, where it is concluded that the Darcy-Brinkman formulation reproduces the data appropriately. The validated model is used to investigate the contribution of convection in reactant transport in porous media of fuel cells. Convective transport provides a major contribution to reactant distribution in the so-called diffusion media. For a serpentine channel and flow with Re = 260-590, convection accounts for 29-58% of total reactant transport to the catalyst layer. (AU)

FAPESP's process: 14/22130-6 - Electrocatalysis beyond platinum: development of sustainable electrocatalysts
Grantee:Thiago Lopes
Support Opportunities: Research Grants - Young Investigators Grants
FAPESP's process: 13/16930-7 - Electrocatalysis V: electrocatalytic processes of chemical and electrical energy interconversion
Grantee:Edson Antonio Ticianelli
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 13/11316-9 - Modeling and simulation of proton exchange membrane fuel cell
Grantee:Otávio Beruski
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 14/50279-4 - Brasil Research Centre for Gas Innovation
Grantee:Julio Romano Meneghini
Support Opportunities: Research Grants - Research Centers in Engineering Program
FAPESP's process: 11/50727-9 - Development of systems for hydrogen production and for the generation and utilization of electrochemical energy
Grantee:Ernesto Rafael Gonzalez
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 17/15304-6 - Electrocatalysis beyond platinum: development of sustainable electrocatalysts
Grantee:Thiago Lopes
Support Opportunities: Scholarships in Brazil - Young Researchers
FAPESP's process: 14/09087-4 - Studies on the use of bioethanol in proton exchange membrane and solid oxide fuel cells
Grantee:Marcelo Linardi
Support Opportunities: Research Projects - Thematic Grants