ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,431,587, issued on Sept. 30, was assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC (Detroit).

"Composite separator including fire suppression layer containing crosslinked cyclopolyphosphazene particles and electrochemical cell including the same" was invented by Yifan Zhao (Warren, Mich.) and Xingcheng Xiao (Troy, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A separator for an electrochemical cell that cycles lithium ions includes a microporous layer and one or more fire suppression layers disposed on at least one of a first side or an opposite second side of the microporous layer. The one or more fire suppression layers include crosslinked cyclo...