Oxide modified air electrode surface for high temperature electrochemical cells.

摘要

An electrochemical cell is made having a porous cermet electrode (16) and a porous lanthanum manganite electrode (14), with solid oxide electrolyte (15) between them, where the lanthanum manganite surface next to the electrolyte contains a thin discontinuous layer of high surface area cerium oxide, and/or praseodymium oxide, preferably as discrete particles (30) in contact with the air electrode and electrolyte.