Impact of fabrication methods on binder distribution and charge transport in composite cathodes of all-solid-state batteries

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dc.citation.articleNumber045102
dc.citation.issueNumber4
dc.citation.journalTitleMaterials Futures
dc.citation.volumeNumber2
dc.contributor.authorEmley, Benjamin
dc.contributor.authorWu, Chaoshan
dc.contributor.authorZhao, Lihong
dc.contributor.authorAi, Qing
dc.contributor.authorLiang, Yanliang
dc.contributor.authorChen, Zhaoyang
dc.contributor.authorGuo, Liqun
dc.contributor.authorTerlier, Tanguy
dc.contributor.authorLou, Jun
dc.contributor.authorFan, Zheng
dc.contributor.authorYao, Yan
dc.date.accessioned2024-05-08T18:56:11Z
dc.date.available2024-05-08T18:56:11Z
dc.date.issued2023
dc.description.abstractThe manufacturing process of all-solid-state batteries necessitates the use of polymer binders. However, these binders, being ionic insulators by nature, can adversely affect charge transport within composite cathodes, thereby impacting the rate performance of the batteries. In this work, we aim to investigate the impact of fabrication methods, specifically the solvent-free dry process versus the slurry-cast wet process, on binder distribution and charge transport in composite cathodes of solid-state batteries. In the dry process, the binder forms a fibrous network, while the wet process results in binder coverage on the surface of cathode active materials. The difference in microstructure leads to a notable 20-fold increase in ionic conductivity in the dry-processed cathode. Consequently, the cells processed via the dry method exhibit higher capacity retention of 89% and 83% at C/3 and C/2 rates, respectively, in comparison to 68% and 58% for the wet-processed cells at the same rate. These findings provide valuable insights into the influence of fabrication methods on binder distribution and charge transport, contributing to a better understanding of the binder’s role in manufacturing of all-solid-state batteries.
dc.identifier.citationEmley, B., Wu, C., Zhao, L., Ai, Q., Liang, Y., Chen, Z., Guo, L., Terlier, T., Lou, J., Fan, Z., & Yao, Y. (2023). Impact of fabrication methods on binder distribution and charge transport in composite cathodes of all-solid-state batteries. Materials Futures, 2(4), 045102. https://doi.org/10.1088/2752-5724/acefe6
dc.identifier.digitalEmley_2023_Mater_Futures_2_045102
dc.identifier.doihttps://doi.org/10.1088/2752-5724/acefe6
dc.identifier.urihttps://hdl.handle.net/1911/115681
dc.language.isoeng
dc.publisherIOP Publishing Ltd
dc.rightsExcept where otherwise noted, this work is licensed under a Creative Commons Attribution (CC BY) license. Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleImpact of fabrication methods on binder distribution and charge transport in composite cathodes of all-solid-state batteries
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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