ALEXANDRIA, Va., June 19 -- United States Patent no. 12,334,539, issued on June 17, was assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC (Detroit).

"Protective layers for lithium metal electrodes and methods of forming 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: "An electrode assembly that includes an electroactive material layer and a protective layer disposed on or adjacent to the electroactive material layer is provided. The protective layer includes a carbonaceous matrix formed from a fluoropolymer, where lithium fluoride and a nitrate salt are distributed within the carbonaceous matrix. The protective layer further inc...