Roll-to-Roll Gravure Coating of PVDF on a Battery Separator for the Enhancement of Thermal Stability

The polyethylene lithium-ion battery separator is coated with a polymer by means of a roll-to-roll (R2R) gravure coating scheme to enhance the thermal stability. The polyvinylidene fluoride (PVDF) or polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) is gravure-coated, and the pores are fabri...

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Detalles Bibliográficos
Autores principales: Kim, Gyuyoung, Noh, Jin-Hee, Lee, Horim, Shin, Jaehak, Lee, Dongjin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10610101/
https://www.ncbi.nlm.nih.gov/pubmed/37896351
http://dx.doi.org/10.3390/polym15204108
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author Kim, Gyuyoung
Noh, Jin-Hee
Lee, Horim
Shin, Jaehak
Lee, Dongjin
author_facet Kim, Gyuyoung
Noh, Jin-Hee
Lee, Horim
Shin, Jaehak
Lee, Dongjin
author_sort Kim, Gyuyoung
collection PubMed
description The polyethylene lithium-ion battery separator is coated with a polymer by means of a roll-to-roll (R2R) gravure coating scheme to enhance the thermal stability. The polyvinylidene fluoride (PVDF) or polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) is gravure-coated, and the pores are fabricated based on online nonsolvent-induced phase separation (NIPS). N-methylpyrrolidone is used as a solvent, and deionized water or a methanol mixture thereof is exploited as a nonsolvent in NIPS. Scanning electron microscopy confirms that the polymer film is formed and that the pores are well developed. The thermal shrinkage decreased by 20.0% and 23.2% compared to that of the bare separator due to the coating of PVDF and PVDF-HFP, respectively. The R2R gravure coating scheme is proven to be fully functional to tailor the properties of lithium-ion battery separators.
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spelling pubmed-106101012023-10-28 Roll-to-Roll Gravure Coating of PVDF on a Battery Separator for the Enhancement of Thermal Stability Kim, Gyuyoung Noh, Jin-Hee Lee, Horim Shin, Jaehak Lee, Dongjin Polymers (Basel) Article The polyethylene lithium-ion battery separator is coated with a polymer by means of a roll-to-roll (R2R) gravure coating scheme to enhance the thermal stability. The polyvinylidene fluoride (PVDF) or polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) is gravure-coated, and the pores are fabricated based on online nonsolvent-induced phase separation (NIPS). N-methylpyrrolidone is used as a solvent, and deionized water or a methanol mixture thereof is exploited as a nonsolvent in NIPS. Scanning electron microscopy confirms that the polymer film is formed and that the pores are well developed. The thermal shrinkage decreased by 20.0% and 23.2% compared to that of the bare separator due to the coating of PVDF and PVDF-HFP, respectively. The R2R gravure coating scheme is proven to be fully functional to tailor the properties of lithium-ion battery separators. MDPI 2023-10-16 /pmc/articles/PMC10610101/ /pubmed/37896351 http://dx.doi.org/10.3390/polym15204108 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kim, Gyuyoung
Noh, Jin-Hee
Lee, Horim
Shin, Jaehak
Lee, Dongjin
Roll-to-Roll Gravure Coating of PVDF on a Battery Separator for the Enhancement of Thermal Stability
title Roll-to-Roll Gravure Coating of PVDF on a Battery Separator for the Enhancement of Thermal Stability
title_full Roll-to-Roll Gravure Coating of PVDF on a Battery Separator for the Enhancement of Thermal Stability
title_fullStr Roll-to-Roll Gravure Coating of PVDF on a Battery Separator for the Enhancement of Thermal Stability
title_full_unstemmed Roll-to-Roll Gravure Coating of PVDF on a Battery Separator for the Enhancement of Thermal Stability
title_short Roll-to-Roll Gravure Coating of PVDF on a Battery Separator for the Enhancement of Thermal Stability
title_sort roll-to-roll gravure coating of pvdf on a battery separator for the enhancement of thermal stability
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10610101/
https://www.ncbi.nlm.nih.gov/pubmed/37896351
http://dx.doi.org/10.3390/polym15204108
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