Improved deposits or layers for microporous membranes, improved membranes, improved lithium battery separators, improved batteries, improved high voltage lithium batteries, and related methods

摘要

A microporous membrane or substrate for an electrochemical device having a layer of a metal and / or metal oxide on at least one side of a polymeric porous membrane is described, wherein the layer is deposited using a deposition process or techniques such as vapor deposition, and wherein layer contains one or more phases of a reactive metal oxide.