1results about How to "No rejection" patented technology

This invention discloses a meta-aramid coating slurry, its preparation method, and a battery separator. Hydrogenated nitrile butadiene rubber (NBR) is used as a binder. During the synthesis of meta-aramid, m-phenylenediamine and NBR are first prepared into a mixed solution, and then meta-aramid is prepared. The amide bonds in the meta-aramid form hydrogen bonds with the NBR, allowing the meta-aramid and NBR to bond well together without intermolecular repulsion. When used in a separator coating, the non-repulsive aramid and NBR not only retain the temperature resistance of the meta-aramid but, more importantly, enable the coated separator and the electrode to exhibit extremely high adhesion under hot-pressing conditions. Applying this coated separator to lithium batteries can significantly improve battery safety.