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Characterization of gas diffusion electrodes for metal-air batteries

Danner, Timo and Eswara, Santhana and Schulz, Volker and Latz, Arnulf (2016) Characterization of gas diffusion electrodes for metal-air batteries. Journal of Power Sources (324), pp. 646-656. Elsevier. doi: 10.1016/j.jpowsour.2016.05.108. ISSN 0378-7753.

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Official URL: http://www.sciencedirect.com/science/article/pii/S0378775316306620

Abstract

Gas diffusion electrodes are commonly used in high energy density metal-air batteries for the supply of oxygen. Hydrophobic binder materials ensure the coexistence of gas and liquid phase in the pore network. The phase distribution has a strong influence on transport processes and electrochemical reactions. In this article we present 2D and 3D Rothman-Keller type multiphase Lattice-Boltzmann models which take into account the heterogeneous wetting behavior of gas diffusion electrodes. The simulations are performed on FIB-SEM 3D reconstructions of an Ag model electrode for predefined saturation of the pore space with the liquid phase. The resulting pressure-saturation characteristics and transport correlations are important input parameters for modeling approaches on the continuum scale and allow for an efficient development of improved gas diffusion electrodes.

Item URL in elib:https://elib.dlr.de/106388/
Document Type:Article
Title:Characterization of gas diffusion electrodes for metal-air batteries
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Danner, Timotimo.danner (at) dlr.dehttps://orcid.org/0000-0003-2336-6059
Eswara, SanthanaUNSPECIFIEDUNSPECIFIED
Schulz, Volkervolker.schulz (at) dhbw-mannheim.deUNSPECIFIED
Latz, Arnulfarnulf.latz (at) dlr.deUNSPECIFIED
Date:May 2016
Journal or Publication Title:Journal of Power Sources
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1016/j.jpowsour.2016.05.108
Page Range:pp. 646-656
Publisher:Elsevier
ISSN:0378-7753
Status:Published
Keywords:Lattice-Boltzmann method; Gas diffusion electrodes; FIB-SEM tomography; Metal-air batteries; Multiphase flow
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Electrochemical Energy Storage
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Electrochemical Processes (Batteries) (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Computational Electrochemistry
Deposited By: Danner, Timo
Deposited On:12 Oct 2016 08:33
Last Modified:20 Jun 2021 15:48

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