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Fabrication Process Simulation of a PEM Fuel Cell Catalyst Layer and Its Microscopic Structure Characteristics

Xiao, Yu LU ; Dou, Meiling; Yuan, Jinliang LU ; Hou, Ming; Song, Wei and Sundén, Bengt LU (2012) In Journal of the Electrochemical Society 159(3). p.308-314
Abstract
The catalyst layers (CLs) in proton exchange membrane fuel cells (PEMFCs) are porous composites of complex microstructures of the building blocks, i.e., Pt nano-particles, carbonaceous substrates and Nafion ionomers. It is important to understand the factors that control the microstructure formation in the fabrication process. A coarse-grained molecular dynamics (CG-MD) method is employed to investigate the fabrication process of CLs, which depends on the type and amount of components and also the type of the dispersion medium (ethylene glycol, isopropanol or hexanol) used during ink preparation of the catalyst-coated membranes (CCMs). The dynamical behaviors of all the components are outlined and analyzed following the fabrication steps.... (More)
The catalyst layers (CLs) in proton exchange membrane fuel cells (PEMFCs) are porous composites of complex microstructures of the building blocks, i.e., Pt nano-particles, carbonaceous substrates and Nafion ionomers. It is important to understand the factors that control the microstructure formation in the fabrication process. A coarse-grained molecular dynamics (CG-MD) method is employed to investigate the fabrication process of CLs, which depends on the type and amount of components and also the type of the dispersion medium (ethylene glycol, isopropanol or hexanol) used during ink preparation of the catalyst-coated membranes (CCMs). The dynamical behaviors of all the components are outlined and analyzed following the fabrication steps. In addition, the Pt nano-particle size distribution is evaluated and compared with the labor testing. Furthermore, the primary pore size distributions in the final formations of three cases are shown and compared with the experiments. The sizes of the reconstructed agglomerates are also considered on the effect of solvent polarity. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.064203jes] All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of the Electrochemical Society
volume
159
issue
3
pages
308 - 314
publisher
The Electrochemical Society
external identifiers
  • wos:000299292100032
  • scopus:84857431502
ISSN
0013-4651
DOI
10.1149/2.064203jes
language
English
LU publication?
yes
id
cfd3c3c2-2d2e-45f8-9c36-84f3517583c2 (old id 2355113)
date added to LUP
2012-02-24 09:15:32
date last changed
2017-08-27 03:12:17
@article{cfd3c3c2-2d2e-45f8-9c36-84f3517583c2,
  abstract     = {The catalyst layers (CLs) in proton exchange membrane fuel cells (PEMFCs) are porous composites of complex microstructures of the building blocks, i.e., Pt nano-particles, carbonaceous substrates and Nafion ionomers. It is important to understand the factors that control the microstructure formation in the fabrication process. A coarse-grained molecular dynamics (CG-MD) method is employed to investigate the fabrication process of CLs, which depends on the type and amount of components and also the type of the dispersion medium (ethylene glycol, isopropanol or hexanol) used during ink preparation of the catalyst-coated membranes (CCMs). The dynamical behaviors of all the components are outlined and analyzed following the fabrication steps. In addition, the Pt nano-particle size distribution is evaluated and compared with the labor testing. Furthermore, the primary pore size distributions in the final formations of three cases are shown and compared with the experiments. The sizes of the reconstructed agglomerates are also considered on the effect of solvent polarity. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.064203jes] All rights reserved.},
  author       = {Xiao, Yu and Dou, Meiling and Yuan, Jinliang and Hou, Ming and Song, Wei and Sundén, Bengt},
  issn         = {0013-4651},
  language     = {eng},
  number       = {3},
  pages        = {308--314},
  publisher    = {The Electrochemical Society},
  series       = {Journal of the Electrochemical Society},
  title        = {Fabrication Process Simulation of a PEM Fuel Cell Catalyst Layer and Its Microscopic Structure Characteristics},
  url          = {http://dx.doi.org/10.1149/2.064203jes},
  volume       = {159},
  year         = {2012},
}