Carbon Binder Domain Inhomogeneity in Silicon-Monoxide/Graphite Composite Anode by 2D Multiphysics Modeling

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Author(s)Gao, Xiang
Author(s)Xu, Jun
Date Accessioned2024-06-18T18:22:16Z
Date Available2024-06-18T18:22:16Z
Publication Date2024-05-22
DescriptionThis article was originally published in Advanced Science. The version of record is available at: https://doi.org/10.1002/advs.202400729. ©2024 The Authors. Advanced Science published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
AbstractThe Carbon-binder domain (CBD) plays a pivotal role in the performance of lithium-ion battery electrodes. The heterogeneous distribution of CBD across the electrode has garnered significant attention. However, a thorough understanding of how this CBD inhomogeneity affects anode performance remains a crucial pursuit, especially when considering the inherent material variations present in the SiO/Graphite (SiO/Gr) composite anode. In this study, an electro-chemo-mechanical model is established that provides a detailed geometric description of the particles. This model allows to quantitatively uncover the effects of CBD inhomogeneity on the fundamental behaviors of the SiO/Gr composite anode. The findings indicate that reducing the proportion of CBD in the upper domain (near the anode surface) compared to the lower domain (near the current collector) positively influences electrochemical performance, particularly in terms of capacity and Li plating. However, such an arrangement introduces potential risks of mechanical failures, and it is recommended to incorporate a higher proportion of CBD alongside the SiO particles. Finally, an anode design with a lower CBD proportion in the upper domain exhibits superior rate performance. This study represents a pioneering modeling exploration of CBD inhomogeneity, offering a promising multiphysics model with significant potential for informing advanced battery design considerations.
SponsorJ.X. appreciates the financial support of the start-up funding from the University of Delaware.
CitationX. Gao, J. Xu, Carbon Binder Domain Inhomogeneity in Silicon-Monoxide/Graphite Composite Anode by 2D Multiphysics Modeling. Adv. Sci. 2024, 2400729. https://doi.org/10.1002/advs.202400729
ISSN2198-3844
URLhttps://udspace.udel.edu/handle/19716/34506
Languageen_US
PublisherAdvanced Science
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
KeywordsCBD inhomogeneity
Keywordshigh-energy-density battery
Keywordsmultiphysics modeling
KeywordsSiO/graphite composite anode
TitleCarbon Binder Domain Inhomogeneity in Silicon-Monoxide/Graphite Composite Anode by 2D Multiphysics Modeling
TypeArticle
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