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/ | |||||||||||||||
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Document Type: | Article | |||||||||||||||
Title: | Characterization of gas diffusion electrodes for metal-air batteries | |||||||||||||||
Authors: |
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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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