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Thermal behavior and microstructures of cathodes for liquid electrolyte-based lithium batteries

Lithium-ion batteries are widely used as a power source for portable equipment. However, the use of highly flammable organic solvents in the liquid electrolyte component in these batteries presents a serious safety concern. In this study, the thermal stability of battery cathodes comprising LiNi(1/3...

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Autores principales: Tsukasaki, Hirofumi, Fukuda, Wataru, Morimoto, Hideyuki, Arai, Toshihiro, Mori, Shigeo, Hayashi, Akitoshi, Tatsumisago, Masahiro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6199343/
https://www.ncbi.nlm.nih.gov/pubmed/30353123
http://dx.doi.org/10.1038/s41598-018-34017-2
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author Tsukasaki, Hirofumi
Fukuda, Wataru
Morimoto, Hideyuki
Arai, Toshihiro
Mori, Shigeo
Hayashi, Akitoshi
Tatsumisago, Masahiro
author_facet Tsukasaki, Hirofumi
Fukuda, Wataru
Morimoto, Hideyuki
Arai, Toshihiro
Mori, Shigeo
Hayashi, Akitoshi
Tatsumisago, Masahiro
author_sort Tsukasaki, Hirofumi
collection PubMed
description Lithium-ion batteries are widely used as a power source for portable equipment. However, the use of highly flammable organic solvents in the liquid electrolyte component in these batteries presents a serious safety concern. In this study, the thermal stability of battery cathodes comprising LiNi(1/3)Mn(1/3)Co(1/3)O(2) (NMC) and LiPF(6)-based electrolyte solutions have been investigated using transmission electron microscopy (TEM) and differential scanning calorimetry (DSC) methods. Ex situ TEM measurements revealed that significant structural change occurred in the charged NMC composite after heating at a temperature above the exothermal peaks. It was found that LiF nanocrystallites precipitated in LiPF(6) and that a number of nanoscale stacking faults developed in the [Formula: see text] layered structure of NMC. The results suggested that the decomposition reaction of LiPF(6) and the structural change of NMC were directly associated with the exothermic reaction in the liquid electrolyte-based NMC electrode composite.
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spelling pubmed-61993432018-10-25 Thermal behavior and microstructures of cathodes for liquid electrolyte-based lithium batteries Tsukasaki, Hirofumi Fukuda, Wataru Morimoto, Hideyuki Arai, Toshihiro Mori, Shigeo Hayashi, Akitoshi Tatsumisago, Masahiro Sci Rep Article Lithium-ion batteries are widely used as a power source for portable equipment. However, the use of highly flammable organic solvents in the liquid electrolyte component in these batteries presents a serious safety concern. In this study, the thermal stability of battery cathodes comprising LiNi(1/3)Mn(1/3)Co(1/3)O(2) (NMC) and LiPF(6)-based electrolyte solutions have been investigated using transmission electron microscopy (TEM) and differential scanning calorimetry (DSC) methods. Ex situ TEM measurements revealed that significant structural change occurred in the charged NMC composite after heating at a temperature above the exothermal peaks. It was found that LiF nanocrystallites precipitated in LiPF(6) and that a number of nanoscale stacking faults developed in the [Formula: see text] layered structure of NMC. The results suggested that the decomposition reaction of LiPF(6) and the structural change of NMC were directly associated with the exothermic reaction in the liquid electrolyte-based NMC electrode composite. Nature Publishing Group UK 2018-10-23 /pmc/articles/PMC6199343/ /pubmed/30353123 http://dx.doi.org/10.1038/s41598-018-34017-2 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
Tsukasaki, Hirofumi
Fukuda, Wataru
Morimoto, Hideyuki
Arai, Toshihiro
Mori, Shigeo
Hayashi, Akitoshi
Tatsumisago, Masahiro
Thermal behavior and microstructures of cathodes for liquid electrolyte-based lithium batteries
title Thermal behavior and microstructures of cathodes for liquid electrolyte-based lithium batteries
title_full Thermal behavior and microstructures of cathodes for liquid electrolyte-based lithium batteries
title_fullStr Thermal behavior and microstructures of cathodes for liquid electrolyte-based lithium batteries
title_full_unstemmed Thermal behavior and microstructures of cathodes for liquid electrolyte-based lithium batteries
title_short Thermal behavior and microstructures of cathodes for liquid electrolyte-based lithium batteries
title_sort thermal behavior and microstructures of cathodes for liquid electrolyte-based lithium batteries
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6199343/
https://www.ncbi.nlm.nih.gov/pubmed/30353123
http://dx.doi.org/10.1038/s41598-018-34017-2
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