Crosslinkable polyhedral silsesquioxane-based ceramic-coated separators for Li-ion batteries
- Title
- Crosslinkable polyhedral silsesquioxane-based ceramic-coated separators for Li-ion batteries
- Author(s)
- Jeon, Hyunkyu ; Roh, Youngjoon ; Jin, Dahee ; Ryou, Myung-Hyun ; Jeong, Yong-Cheol ; Lee, Yong Min
- DGIST Authors
- Lee, Yong Min
- Issued Date
- 2019-03
- Type
- Article
- Article Type
- Article
- Author Keywords
- Li-ion battery ; Ceramic-coated separator ; Silsesquioxane ; Flame retardancy ; Thermal stability
- Keywords
- POLYETHYLENE SEPARATOR ; POLYPROPYLENE SEPARATORS ; LITHIUM ; ENHANCEMENT ; PERFORMANCE
- ISSN
- 1226-086X
- Abstract
- Inorganic polyhedral oligomeric silsesquioxane with epoxy functional groups (ePOSS) is newly presented as a co-binder for the ceramic-coated separator (CCS) for safe Li-ion batteries. The ePOSS-incorporated coating layer significantly improved the dimensional stability of the CCS at 140 °C and maintained the original form even after an ignition test. Although the permeability of the CCS was slightly decreased due to the crosslinked structure of the silsesquioxane coating layer, it showed high electrochemical stability up to 5 V. Moreover, the improved liquid electrolyte wettability by ePOSS co-binder enhanced the ionic conductivity and showed 93% of cycle capacity at 0.5C rate in Li-ion batteries. © 2018 The Korean Society of Industrial and Engineering Chemistry
- Publisher
- Korean Society of Industrial and Engineering Chemistry
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- Appears in Collections:
- Department of Energy Science and Engineering Battery Materials & Systems LAB 1. Journal Articles
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