A Modified Ceramic-Coating Separator with High-Temperature Stability for Lithium-Ion Battery.

ABSTRACT: In this work, the ceramic coating separator (CCS-CS) prepared with polyethylene (PE) separator, Al₂O₃ inorganic particles, carboxymethyl cellulose sodium (CMC) and styrene-butadiene rubber (SBR) mix binders is further modified by coating with a thin polydopamine (PDA) layer through a simple chemical deposition method. Compared with the bare ceramic coating separator, the PDA-modified CCS-CS (CCS-CS-PDA) exhibits excellent thermal stability, which shows no thermal shrinkage after storing at 200 °C for 30 min. Compared with the PE separator, both the uptake and wettability with the electrolyte and water of CCS-CS-PDA are improved significantly. Meanwhile, when saturated with liquid electrolyte, the CCS-CS-PDA also shows enabled high ionic conductance. Furthermore, the test of the electrochem

SUBMITTER: Shi C 

PROVIDER: S-EPMC6432417 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature