The impact of binder polarity on the properties of aqueously processed positive and negative electrodes for lithium-ion batteries
Abstract The surface free energy of materials plays a crucial role in defining the interactions between interfaces. In this study, we introduce the theory behind surface free energy and extend its application to solvent-based manufacturing processes of positive (cathode) and negative (anode) electro...
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Nature Portfolio
2025-03-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-93813-9 |
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| author | Andreas Weber Noah Keim Pirmin Koch Marcus Müller Werner Bauer Helmut Ehrenberg |
| author_facet | Andreas Weber Noah Keim Pirmin Koch Marcus Müller Werner Bauer Helmut Ehrenberg |
| author_sort | Andreas Weber |
| collection | DOAJ |
| description | Abstract The surface free energy of materials plays a crucial role in defining the interactions between interfaces. In this study, we introduce the theory behind surface free energy and extend its application to solvent-based manufacturing processes of positive (cathode) and negative (anode) electrodes for lithium-ion batteries. By employing binders, namely polyvinylidene difluoride latices and sodium carboxymethyl cellulose, with differing surface free energy compositions, we systematically investigate how surface free energy influences key electrode properties. The binder properties are shown to affect adhesion strength, electrical resistance, and water retention in electrodes, with analogous effects observed in both cathodes and anodes. For cathodes, these differences translate to measurable impacts on cell performance, particularly in terms of rate capability and long-term cycling stability. We also explore how binder induced variations in water retention influence the formation and stability of the solid electrolyte interphase. The findings highlight the critical role of the binder’s surface free energy composition in optimizing electrode manufacturing and provide new insights into the interplay between electrode surface chemistry, microstructure, and electrochemical performance. |
| format | Article |
| id | doaj-art-5d36eb80088a4c6a80f7c51fa7b270da |
| institution | DOAJ |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-5d36eb80088a4c6a80f7c51fa7b270da2025-08-20T02:41:34ZengNature PortfolioScientific Reports2045-23222025-03-0115111510.1038/s41598-025-93813-9The impact of binder polarity on the properties of aqueously processed positive and negative electrodes for lithium-ion batteriesAndreas Weber0Noah Keim1Pirmin Koch2Marcus Müller3Werner Bauer4Helmut Ehrenberg5Karlsruhe Institute of Technology, Institute for Applied MaterialsKarlsruhe Institute of Technology, Institute for Applied MaterialsKarlsruhe Institute of Technology, Institute for Applied MaterialsKarlsruhe Institute of Technology, Institute for Applied MaterialsKarlsruhe Institute of Technology, Institute for Applied MaterialsKarlsruhe Institute of Technology, Institute for Applied MaterialsAbstract The surface free energy of materials plays a crucial role in defining the interactions between interfaces. In this study, we introduce the theory behind surface free energy and extend its application to solvent-based manufacturing processes of positive (cathode) and negative (anode) electrodes for lithium-ion batteries. By employing binders, namely polyvinylidene difluoride latices and sodium carboxymethyl cellulose, with differing surface free energy compositions, we systematically investigate how surface free energy influences key electrode properties. The binder properties are shown to affect adhesion strength, electrical resistance, and water retention in electrodes, with analogous effects observed in both cathodes and anodes. For cathodes, these differences translate to measurable impacts on cell performance, particularly in terms of rate capability and long-term cycling stability. We also explore how binder induced variations in water retention influence the formation and stability of the solid electrolyte interphase. The findings highlight the critical role of the binder’s surface free energy composition in optimizing electrode manufacturing and provide new insights into the interplay between electrode surface chemistry, microstructure, and electrochemical performance.https://doi.org/10.1038/s41598-025-93813-9Surface free energyAqueous processingPVDF latexCMCBiopolymerLiNi0.5Mn1.5O4 |
| spellingShingle | Andreas Weber Noah Keim Pirmin Koch Marcus Müller Werner Bauer Helmut Ehrenberg The impact of binder polarity on the properties of aqueously processed positive and negative electrodes for lithium-ion batteries Scientific Reports Surface free energy Aqueous processing PVDF latex CMC Biopolymer LiNi0.5Mn1.5O4 |
| title | The impact of binder polarity on the properties of aqueously processed positive and negative electrodes for lithium-ion batteries |
| title_full | The impact of binder polarity on the properties of aqueously processed positive and negative electrodes for lithium-ion batteries |
| title_fullStr | The impact of binder polarity on the properties of aqueously processed positive and negative electrodes for lithium-ion batteries |
| title_full_unstemmed | The impact of binder polarity on the properties of aqueously processed positive and negative electrodes for lithium-ion batteries |
| title_short | The impact of binder polarity on the properties of aqueously processed positive and negative electrodes for lithium-ion batteries |
| title_sort | impact of binder polarity on the properties of aqueously processed positive and negative electrodes for lithium ion batteries |
| topic | Surface free energy Aqueous processing PVDF latex CMC Biopolymer LiNi0.5Mn1.5O4 |
| url | https://doi.org/10.1038/s41598-025-93813-9 |
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