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Impact of water drop presence on diffusion parameters of PEFC gas diffusion layers

Espinoza-Andaluz, Mayken LU ; Li, Tingshuai and Andersson, Martin LU (2019) In Energy Procedia 158. p.1400-1405
Abstract

A polymer electrolyte fuel cell (PEFC) produces electrical energy thanks to the electrochemical reaction carried out inside the cell. During the energy conversion, water molecules are also produced in the cathode side and this can affect the diffusion parameters of the gas diffusion layers (GDLs). The generated water-drops due to the reaction may block the reactant gases and produce material oxidation. The mentioned phenomena influence the performance of the PEFCs. This paper aims to describe and quantify the impact on diffusion parameters of GDLs when the presence of formed water-drops inside the layer is considered. This study considers digitally generated GDLs, and the parameters considered are porosity, gas-phase tortuosity and... (More)

A polymer electrolyte fuel cell (PEFC) produces electrical energy thanks to the electrochemical reaction carried out inside the cell. During the energy conversion, water molecules are also produced in the cathode side and this can affect the diffusion parameters of the gas diffusion layers (GDLs). The generated water-drops due to the reaction may block the reactant gases and produce material oxidation. The mentioned phenomena influence the performance of the PEFCs. This paper aims to describe and quantify the impact on diffusion parameters of GDLs when the presence of formed water-drops inside the layer is considered. This study considers digitally generated GDLs, and the parameters considered are porosity, gas-phase tortuosity and diffusibility. The fluid flow behavior through the three-dimensional porous domain representing the GDL is obtained by using the lattice Boltzmann method (LBM). Depending on the water-drop size, the impact over the mentioned parameters can be computed. For the current study, a single water-drop has been placed into the GDL domain and its impact has been analyzed.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Diffusibility, Gas diffusion layer, Gas-phase tortuosity, PEFC, Water-drops
host publication
Energy Procedia
series title
Energy Procedia
volume
158
pages
6 pages
external identifiers
  • scopus:85063868833
ISSN
1876-6102
ISBN
1876-6102
DOI
10.1016/j.egypro.2019.01.341
language
English
LU publication?
yes
id
c2b08178-d4fb-43cc-b7c2-84a4431d4f13
date added to LUP
2019-04-23 15:06:39
date last changed
2019-12-03 02:06:30
@inproceedings{c2b08178-d4fb-43cc-b7c2-84a4431d4f13,
  abstract     = {<p>A polymer electrolyte fuel cell (PEFC) produces electrical energy thanks to the electrochemical reaction carried out inside the cell. During the energy conversion, water molecules are also produced in the cathode side and this can affect the diffusion parameters of the gas diffusion layers (GDLs). The generated water-drops due to the reaction may block the reactant gases and produce material oxidation. The mentioned phenomena influence the performance of the PEFCs. This paper aims to describe and quantify the impact on diffusion parameters of GDLs when the presence of formed water-drops inside the layer is considered. This study considers digitally generated GDLs, and the parameters considered are porosity, gas-phase tortuosity and diffusibility. The fluid flow behavior through the three-dimensional porous domain representing the GDL is obtained by using the lattice Boltzmann method (LBM). Depending on the water-drop size, the impact over the mentioned parameters can be computed. For the current study, a single water-drop has been placed into the GDL domain and its impact has been analyzed.</p>},
  author       = {Espinoza-Andaluz, Mayken and Li, Tingshuai and Andersson, Martin},
  booktitle    = {Energy Procedia},
  isbn         = {1876-6102},
  issn         = {1876-6102},
  language     = {eng},
  month        = {01},
  pages        = {1400--1405},
  series       = {Energy Procedia},
  title        = {Impact of water drop presence on diffusion parameters of PEFC gas diffusion layers},
  url          = {http://dx.doi.org/10.1016/j.egypro.2019.01.341},
  doi          = {10.1016/j.egypro.2019.01.341},
  volume       = {158},
  year         = {2019},
}