Crosslinkable polyhedral silsesquioxane-based ceramic-coated separators for Li-ion batteries

[Display omitted] 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 a...

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Published inJournal of industrial and engineering chemistry (Seoul, Korea) Vol. 71; pp. 277 - 283
Main Authors Jeon, Hyunkyu, Roh, Youngjoon, Jin, Dahee, Ryou, Myung-Hyun, Jeong, Yong-Cheol, Lee, Yong Min
Format Journal Article
LanguageEnglish
Published Elsevier B.V 25.03.2019
한국공업화학회
Subjects
Ceramic-coated separator
Flame retardancy
Li-ion battery
Silsesquioxane
Thermal stability
화학공학
Flame retardancy
Li-ion battery
Ceramic-coated separator
Thermal stability
Silsesquioxane
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ISSN1226-086X
1876-794X
DOI10.1016/j.jiec.2018.11.036

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Summary:[Display omitted] 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 5V. 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.
ISSN:1226-086X
1876-794X
DOI:10.1016/j.jiec.2018.11.036