| abstract |
A coating composition is used to prepare a separator for a rechargeable lithium battery. The coating composition includes inorganic particles, a binder, a silane-based dispersant, and a polymeric additive, the silane-based dispersant includes a silane-based compound having fewer than 8 carbons in an alkyl main chain, and the polymeric additive includes a fatty acid compound and a polymer polyol. The coating composition may have secured or improved long-term storage stability, and may thus provide for a composite separator having a reduced number of black spot defects after coating the separator. |