| Titre : | Enhancement of the meltdown temperature of a lithium ion battery separator via a nanocomposite coating (2010) |
| Auteurs : | S. H. Yoo, Auteur ; C. K. Kim, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 48 N° 22, Novembre 2009) |
| Article en page(s) : | pp. 9936–9941 |
| Note générale : | Chemical engineering |
| Langues : | Anglais |
| Tags : | Lithium ion battery separator Meltdown temperature |
| Résumé : | In a previous study, a lithium ion battery separator was coated with polymers synthesized from various ethylene glycol dimethacrylates to enhance its meltdown temperature. The meltdown temperature of the separator was increased to 155 °C when it was coated with polymer synthesized from diethylene glycol dimethacrylate (DEGDMA). In this study, a PE separator was coated with nanocomposites composed of DEGDMA polymer and silica nanoparticles for further enhancement of the meltdown temperature. Coatings with nanocomposites were prepared via two different methods: coating the separator by reacting a methanol solution containing DEGDMA and silica nanoparticles or coating the separator by reacting with a methanol solution containing water, DEGDMA, and tetraethylorthosilicate. The formation of nanocomposite on the separator was confirmed by FT-IR, EDS, and electron microscopy. Regardless of the coating method, an increase in the meltdown temperature with a decrease in the air permeability was observed with the nanocomposite coating. The meltdown temperature of the separator was increased to 170 °C with an acceptable reduction in the air permeability when the separator was coated with composite using the latter method. |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie901141u |
