Design-Considerations regarding Silicon/Graphite and Tin/Graphite Composite Electrodes for Lithium-Ion Batteries

An analytical model is proposed to investigate properties of composite electrodes that utilize more than one active material. We demonstrate how the equations can be applied to aid in the design of electrodes by comparing silicon-graphite and tin-graphite composite negative electrodes as examples wi...

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Autores principales: Otero, Manuel, Heim, Christopher, Leiva, Ezequiel P. M., Wagner, Norbert, Friedrich, Andreas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6203704/
https://www.ncbi.nlm.nih.gov/pubmed/30367071
http://dx.doi.org/10.1038/s41598-018-33405-y
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author Otero, Manuel
Heim, Christopher
Leiva, Ezequiel P. M.
Wagner, Norbert
Friedrich, Andreas
author_facet Otero, Manuel
Heim, Christopher
Leiva, Ezequiel P. M.
Wagner, Norbert
Friedrich, Andreas
author_sort Otero, Manuel
collection PubMed
description An analytical model is proposed to investigate properties of composite electrodes that utilize more than one active material. We demonstrate how the equations can be applied to aid in the design of electrodes by comparing silicon-graphite and tin-graphite composite negative electrodes as examples with practical relevance. Based on simple assumptions, the results show how volume expansion tolerance and initial porosity are important factors for the achievable gravimetric and volumetric capacities as well as volumetric energy density. A Si-alloy/graphite composite electrode is used as an experimental system to corroborate the formulated analysis. Kinetic limitations are also addressed based on a novel heuristic approach.
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spelling pubmed-62037042018-10-31 Design-Considerations regarding Silicon/Graphite and Tin/Graphite Composite Electrodes for Lithium-Ion Batteries Otero, Manuel Heim, Christopher Leiva, Ezequiel P. M. Wagner, Norbert Friedrich, Andreas Sci Rep Article An analytical model is proposed to investigate properties of composite electrodes that utilize more than one active material. We demonstrate how the equations can be applied to aid in the design of electrodes by comparing silicon-graphite and tin-graphite composite negative electrodes as examples with practical relevance. Based on simple assumptions, the results show how volume expansion tolerance and initial porosity are important factors for the achievable gravimetric and volumetric capacities as well as volumetric energy density. A Si-alloy/graphite composite electrode is used as an experimental system to corroborate the formulated analysis. Kinetic limitations are also addressed based on a novel heuristic approach. Nature Publishing Group UK 2018-10-26 /pmc/articles/PMC6203704/ /pubmed/30367071 http://dx.doi.org/10.1038/s41598-018-33405-y Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Otero, Manuel
Heim, Christopher
Leiva, Ezequiel P. M.
Wagner, Norbert
Friedrich, Andreas
Design-Considerations regarding Silicon/Graphite and Tin/Graphite Composite Electrodes for Lithium-Ion Batteries
title Design-Considerations regarding Silicon/Graphite and Tin/Graphite Composite Electrodes for Lithium-Ion Batteries
title_full Design-Considerations regarding Silicon/Graphite and Tin/Graphite Composite Electrodes for Lithium-Ion Batteries
title_fullStr Design-Considerations regarding Silicon/Graphite and Tin/Graphite Composite Electrodes for Lithium-Ion Batteries
title_full_unstemmed Design-Considerations regarding Silicon/Graphite and Tin/Graphite Composite Electrodes for Lithium-Ion Batteries
title_short Design-Considerations regarding Silicon/Graphite and Tin/Graphite Composite Electrodes for Lithium-Ion Batteries
title_sort design-considerations regarding silicon/graphite and tin/graphite composite electrodes for lithium-ion batteries
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6203704/
https://www.ncbi.nlm.nih.gov/pubmed/30367071
http://dx.doi.org/10.1038/s41598-018-33405-y
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