SOLID STATE ELECTROCHEMICAL CELL HAVING POROUS CATHODE CURRENT COLLECTOR

摘要

A sold state laminar electrochemical cell (10) has an alkali metal anode layer (12), a solid ionically conducting electrolyte layer (14) and a cathode/current collector layer (16). The electrolyte layer (14) is interposed between the alkali metal anode layer (12) and the cathode/current collector layer (16). The cathode/current collector layer (16) comprises an electrically conductive substrate (18) having a plurality of surface voids (20) and a composite cathode composition (22) comprising an intercalation compound, an electrically conductive filler and an ionically conductive electrolyte. The cathode composition (22) is coated on the surface of the substrate (18) facing the electrolyte layer (14) and is maintained in the voids (20) of the surface.