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Thick electrodes for Li-ion batteries: A model based analysis

Danner, Timo and Singh, Madhav and Hein, Simon and Kaiser, Jörg and Latz, Arnulf (2016) Thick electrodes for Li-ion batteries: A model based analysis. Journal of Power Sources, 334, pp. 191-201. Elsevier. doi: 10.1016/j.jpowsour.2016.09.143. ISSN 0378-7753.

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Official URL: http://www.sciencedirect.com/science/article/pii/S0378775316313337


Li-ion batteries are commonly used in portable electronic devices due to their outstanding energy and power density. A remaining issue which hinders the breakthrough e.g. in the automotive sector is the high production cost. For low power applications, such as stationary storage, batteries with electrodes thicker than 300 \textmu m were suggested. High energy densities can be attained with only a few electrode layers which reduces production time and cost. However, mass and charge transport limitations can be severe at already small C-rates due to long transport pathways. In this article we use a detailed 3D micro-structure resolved model to investigate limiting factors for battery performance. The model is parametrized with data from the literature and dedicated experiments and shows good qualitative agreement with experimental discharge curves of thick NMC-graphite Li-ion batteries. The model is used to assess the effect of inhomogeneities in carbon black distribution and gives answers to the possible occurrence of lithium plating during battery charge. Based on our simulations we can predict optimal operation strategies and improved design concepts for future Li-ion batteries employing thick electrodes.

Item URL in elib:https://elib.dlr.de/106393/
Document Type:Article
Title:Thick electrodes for Li-ion batteries: A model based analysis
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Danner, TimoTimo.Danner (at) dlr.dehttps://orcid.org/0000-0003-2336-6059
Hein, Simonsimon.hein (at) dlr.deUNSPECIFIED
Latz, Arnulfarnulf.latz (at) dlr.deUNSPECIFIED
Date:24 September 2016
Journal or Publication Title:Journal of Power Sources
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.jpowsour.2016.09.143
Page Range:pp. 191-201
Keywords:Li-ion batteries, continuum modeling, micro-structure resolved simulation, thick electrodes
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:13 Oct 2016 10:14
Last Modified:31 Jul 2019 20:03

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