Solid state electrochemical cell having microroughened current collector

摘要

A solid state laminar electrochemical cell comprising: an alkali metal anode layer; a solid ionically conductive electrolyte layer; a cathode composition layer; and a current collector; wherein said electrolyte layer is interposed between said alkali metal anode layer and said cathode layer and said cathode layer is interposed between said electrolyte layer and said current collector, the surface of said current collector which contacts said electrolyte layer being microroughened to enable the cathode layer to tightly adhere to said current collector is disclosed.