ALEXANDRIA, Va., June 5 -- United States Patent no. 12,278,339, issued on April 15, was assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC (Detroit).

"Solid-state battery with solid electrolyte surface topography design" was invented by Yong Lu (Pudong, China), Zhe Li (Pudong, China) and Dewen Kong (Minhang, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A solid-state battery cell, such as a lithium-ion cell, is assembled with a solid electrolyte layer member positioned between co-extensive surface layers of an anode active layer member and a cathode active material layer member. At least one of the engaging surfaces of the solid electrolyte layer is not flat. It is formed with a topographical pattern com...