Impact of Conductive Agents in Sulfide Electrolyte Coating on Cathode Active Materials for Composite Electrodes in All-Solid-State Batteries

Impact of Conductive Agents in Sulfide Electrolyte Coating on Cathode Active Materials for Composite Electrodes in All-Solid-State Batteries | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL Battery Energy This is a preprint and has not been peer reviewed. Data may be preliminary. 30 April 2025 V1 Latest version Share on Impact of Conductive Agents in Sulfide Electrolyte Coating on Cathode Active Materials for Composite Electrodes in All-Solid-State Batteries Authors : Dongyoung Kim , Jongjun Lee , Seungyeop Choi , Hyobin Lee , and Yong Min Lee [email protected] Authors Info & Affiliations https://doi.org/10.22541/au.174600015.50328812/v1 Published Battery Energy Version of record Peer review timeline 527 views 205 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract backend=biber, style=alphabetic, sorting=ynt ]biblatex All-solid-state batteries (ASSBs) with sulfide-based solid electrolytes (SEs) are promising next-generation lithium-ion batteries owing to their high energy density and safety. The composite electrode is crucial in electrochemical performance, and SE coating on the cathode active material (CAM) is an effective strategy for improving the composite electrode structure. However, despite the importance of conducting agents (CAs) in composite electrodes, their impact on the SE coating process has not been thoroughly investigated. Here, the effect of CA incorporation during the SE coating process on the morphology of the coating layer, composite electrode structure, and resulting electrochemical performance of ASSBs were examined. When the SE coating excluded CA (SE@CAM), a dense SE layer was formed on the CAM surface. By contrast, incorporating carbon black (Super P) during SE coating (SE–SP@CAM) resulted in a Super P-rich SE coating layer, reducing the active surface area and electrical conductivity of electrode and resulting in poor electrochemical performance. Meanwhile, incorporating vapor-grown carbon fibers (VGCF, 1D CA) during the SE coating process (SE–VGCF@CAM) resulted in the formation of VGCF-embedded SE coating layer. This enlarged the active surface area and facilitated electron conduction, yielding an electrochemical performance higher than that of SE–SP@CAM and comparable to that of SE@CAM. This study revealed the impact of CA incorporation during the SE coating process on the morphology of the coating layer and composite electrode structure. Furthermore, it emphasizes the importance of the mixing protocol and CA selection in electrode fabrication, offering valuable insights into developing high-performance ASSBs. Supplementary Material File (manuscript_lee_et_al.docx) Download 5.17 MB Information & Authors Information Version history V1 Version 1 30 April 2025 Peer review timeline Published Battery Energy Version of Record 26 Aug 2025 Published Copyright This work is licensed under a Non Exclusive No Reuse License. Collection Battery Energy Keywords all-solid-state batteries composite electrode conductive agent fabrication process sulfide solid electrolytes Authors Affiliations Dongyoung Kim Yonsei University Department of Chemical and Biomolecular Engineering View all articles by this author Jongjun Lee Yonsei University Department of Chemical and Biomolecular Engineering View all articles by this author Seungyeop Choi Yonsei University Department of Chemical and Biomolecular Engineering View all articles by this author Hyobin Lee Daegu Gyeongbuk Institute of Science & Technology View all articles by this author Yong Min Lee [email protected] Yonsei University Department of Chemical and Biomolecular Engineering View all articles by this author Metrics & Citations Metrics Article Usage 527 views 205 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Dongyoung Kim, Jongjun Lee, Seungyeop Choi, et al. Impact of Conductive Agents in Sulfide Electrolyte Coating on Cathode Active Materials for Composite Electrodes in All-Solid-State Batteries. Authorea . 30 April 2025. DOI: https://doi.org/10.22541/au.174600015.50328812/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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