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Multiscale modeling of lithium ion batteries: thermal aspects
The thermal behavior of lithium ion batteries has a huge impact on their lifetime and the initiation of degradation processes. The development of hot spots or large local overpotentials leading, e.g., to lithium metal deposition depends on material properties as well as on the nano- und microstructu...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Beilstein-Institut
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4419596/ https://www.ncbi.nlm.nih.gov/pubmed/25977870 http://dx.doi.org/10.3762/bjnano.6.102 |
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author | Latz, Arnulf Zausch, Jochen |
author_facet | Latz, Arnulf Zausch, Jochen |
author_sort | Latz, Arnulf |
collection | PubMed |
description | The thermal behavior of lithium ion batteries has a huge impact on their lifetime and the initiation of degradation processes. The development of hot spots or large local overpotentials leading, e.g., to lithium metal deposition depends on material properties as well as on the nano- und microstructure of the electrodes. In recent years a theoretical structure emerges, which opens the possibility to establish a systematic modeling strategy from atomistic to continuum scale to capture and couple the relevant phenomena on each scale. We outline the building blocks for such a systematic approach and discuss in detail a rigorous approach for the continuum scale based on rational thermodynamics and homogenization theories. Our focus is on the development of a systematic thermodynamically consistent theory for thermal phenomena in batteries at the microstructure scale and at the cell scale. We discuss the importance of carefully defining the continuum fields for being able to compare seemingly different phenomenological theories and for obtaining rules to determine unknown parameters of the theory by experiments or lower-scale theories. The resulting continuum models for the microscopic and the cell scale are numerically solved in full 3D resolution. The complex very localized distributions of heat sources in a microstructure of a battery and the problems of mapping these localized sources on an averaged porous electrode model are discussed by comparing the detailed 3D microstructure-resolved simulations of the heat distribution with the result of the upscaled porous electrode model. It is shown, that not all heat sources that exist on the microstructure scale are represented in the averaged theory due to subtle cancellation effects of interface and bulk heat sources. Nevertheless, we find that in special cases the averaged thermal behavior can be captured very well by porous electrode theory. |
format | Online Article Text |
id | pubmed-4419596 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Beilstein-Institut |
record_format | MEDLINE/PubMed |
spelling | pubmed-44195962015-05-14 Multiscale modeling of lithium ion batteries: thermal aspects Latz, Arnulf Zausch, Jochen Beilstein J Nanotechnol Full Research Paper The thermal behavior of lithium ion batteries has a huge impact on their lifetime and the initiation of degradation processes. The development of hot spots or large local overpotentials leading, e.g., to lithium metal deposition depends on material properties as well as on the nano- und microstructure of the electrodes. In recent years a theoretical structure emerges, which opens the possibility to establish a systematic modeling strategy from atomistic to continuum scale to capture and couple the relevant phenomena on each scale. We outline the building blocks for such a systematic approach and discuss in detail a rigorous approach for the continuum scale based on rational thermodynamics and homogenization theories. Our focus is on the development of a systematic thermodynamically consistent theory for thermal phenomena in batteries at the microstructure scale and at the cell scale. We discuss the importance of carefully defining the continuum fields for being able to compare seemingly different phenomenological theories and for obtaining rules to determine unknown parameters of the theory by experiments or lower-scale theories. The resulting continuum models for the microscopic and the cell scale are numerically solved in full 3D resolution. The complex very localized distributions of heat sources in a microstructure of a battery and the problems of mapping these localized sources on an averaged porous electrode model are discussed by comparing the detailed 3D microstructure-resolved simulations of the heat distribution with the result of the upscaled porous electrode model. It is shown, that not all heat sources that exist on the microstructure scale are represented in the averaged theory due to subtle cancellation effects of interface and bulk heat sources. Nevertheless, we find that in special cases the averaged thermal behavior can be captured very well by porous electrode theory. Beilstein-Institut 2015-04-20 /pmc/articles/PMC4419596/ /pubmed/25977870 http://dx.doi.org/10.3762/bjnano.6.102 Text en Copyright © 2015, Latz and Zausch https://creativecommons.org/licenses/by/2.0https://www.beilstein-journals.org/bjnano/termsThis is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The license is subject to the Beilstein Journal of Nanotechnology terms and conditions: (https://www.beilstein-journals.org/bjnano/terms) |
spellingShingle | Full Research Paper Latz, Arnulf Zausch, Jochen Multiscale modeling of lithium ion batteries: thermal aspects |
title | Multiscale modeling of lithium ion batteries: thermal aspects |
title_full | Multiscale modeling of lithium ion batteries: thermal aspects |
title_fullStr | Multiscale modeling of lithium ion batteries: thermal aspects |
title_full_unstemmed | Multiscale modeling of lithium ion batteries: thermal aspects |
title_short | Multiscale modeling of lithium ion batteries: thermal aspects |
title_sort | multiscale modeling of lithium ion batteries: thermal aspects |
topic | Full Research Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4419596/ https://www.ncbi.nlm.nih.gov/pubmed/25977870 http://dx.doi.org/10.3762/bjnano.6.102 |
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