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Issue 29, 2012
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A multiscale physical model for the transient analysis of PEMwater electrolyzer anodes

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Abstract

Polymer electrolyte membrane water electrolyzers (PEMWEs) are electrochemical devices that can be used for the production of hydrogen. In a PEMWE the anode is the most complex electrode to study due to the high overpotential of the oxygen evolution reaction (OER), not widely understood. A physical bottom-up multi-scale transient model describing the operation of a PEMWE anode is proposed here. This model includes a detailed description of the elementary OER kinetics in the anode, a description of the non-equilibrium behavior of the nanoscale catalyst–electrolyte interface, and a microstructural-resolved description of the transport of charges and O2 at the micro and mesoscales along the whole anode. The impact of different catalyst materials on the performance of the PEMWE anode, and a study of sensitivity to the operation conditions are evaluated from numerical simulations and the results are discussed in comparison with experimental data.

Graphical abstract: A multiscale physical model for the transient analysis of PEM water electrolyzer anodes

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Article information


Submitted
19 Oct 2011
Accepted
24 Apr 2012
First published
24 Apr 2012

Phys. Chem. Chem. Phys., 2012,14, 10215-10224
Article type
Paper

A multiscale physical model for the transient analysis of PEM water electrolyzer anodes

L. F. L. Oliveira, S. Laref, E. Mayousse, C. Jallut and A. A. Franco, Phys. Chem. Chem. Phys., 2012, 14, 10215
DOI: 10.1039/C2CP23300B

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