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Precipitation in aqueous lithium–oxygen batteries: a model-based analysis

Horstmann, Birger and Danner, Timo and Bessler, Wolfgang (2013) Precipitation in aqueous lithium–oxygen batteries: a model-based analysis. Energy & Environmental Science, 6 (4), pp. 1299-1314. Royal Society of Chemistry. DOI: 10.1039/C3EE24299D ISSN 1754-5692

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Official URL: http://pubs.rsc.org/en/content/articlelanding/2013/ee/c3ee24299d#!divAbstract

Abstract

In this paper we present a model of the discharge of a lithium–oxygen battery with aqueous electrolyte. Lithium–oxygen batteries (Li–O2) have recently received great attention due to their large theoretical specific energy. Advantages of the aqueous design include the stability of the electrolyte, the long experience with gas diffusion electrodes (GDEs), and the solubility of the reaction product lithium hydroxide. However, competitive specific energies can only be obtained if the product is allowed to precipitate. Here we present a dynamic one-dimensional model of a Li–O2 battery including a GDE and precipitation of lithium hydroxide. The model is parameterized using experimental data from the literature. We demonstrate that GDEs remove power limitations due to slow oxygen transport in solutions and that lithium hydroxide tends to precipitate on the anode side. We discuss the system architecture to engineer where nucleation and growth predominantly occurs and to optimize for discharge capacity.

Item URL in elib:https://elib.dlr.de/86097/
Document Type:Article
Title:Precipitation in aqueous lithium–oxygen batteries: a model-based analysis
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Horstmann, Birgerbirger.horstmann (at) dlr.deUNSPECIFIED
Danner, Timotimo.danner (at) dlr.deUNSPECIFIED
Bessler, Wolfgangwolfgang.bessler (at) hs-offenburg.deUNSPECIFIED
Date:6 February 2013
Journal or Publication Title:Energy & Environmental Science
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:6
DOI :10.1039/C3EE24299D
Page Range:pp. 1299-1314
Publisher:Royal Society of Chemistry
ISSN:1754-5692
Status:Published
Keywords:aqueous lithium-air battery, modeling, precipitation
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion and Use (old)
HGF - Program Themes:Fuel Cells (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Elektrochemische Prozesse (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Horstmann, Birger
Deposited On:02 Dec 2013 14:56
Last Modified:25 Nov 2015 03:00

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