Patent ID: 8029927

Claim:
A device comprising a flat, thin electrochemical cell for generating an electrical current, said cell including: a first substrate layer comprising a polymeric film and an oxide barrier layer having a gas transmission rate that permits gas to escape; a second substrate layer comprising a polymeric film and an oxide barrier layer having a gas transmission rate that permits gas to escape; a cathode layer provided on at least one of said first substrate layer and said second substrate layer; an anode layer provided on at least one of said first substrate layer and said second substrate layer; an electrolyte layer in contact with said cathode layer and also in contact with said anode layer; and a frame provided substantially around a perimeter of said cell and connecting said first substrate layer to said second substrate layer; said frame together with said first and second substrate layers defining an inner space that encloses said electrolyte layer and at least portions of said cathode and anode layers.