Thin printable electrochemical cell and methods of making the same
AssigneeBlue Spark Technologies, Inc.
InventorGary R. Tucholski
Life of this patent
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Abstract
A thin printed flexible electrochemical cell, and its method of manufacture, using a “picture frame” structure sealed, for example, with a high moisture and oxygen barrier polymer film and featuring, for example, a printed cathode deposited on an optional, highly conductive carbon printed cathode collector with a printed or a foil strip anode placed adjacent to the cathode. A viscous or gelled electrolyte is dispensed and/or printed in the cell, and a top laminate can then be sealed onto the picture frame. Such a construction could allow the entire cell to be made on a printing press, for example, as well as gives the opportunity to integrate the battery directly with an electronic application, for example.
Claims21
A flat electrochemical cell for generating an electrical current, comprising:
- a first substrate layer comprising a plurality of laminated layers including a first oxide barrier layer having a gas transmission rate that permits gas to escape through said plurality of laminated layers of the first substrate layer;
- a second substrate layer;
- a cathode layer provided on said first substrate layer or said second substrate layer;
- an anode layer provided on the same of said first substrate layer and said second substrate layer as said cathode layer, said anode layer and said cathode layer thereby being arranged substantially co-planar;
- a liquid electrolyte in contact with said cathode layer and also in contact with said anode layer;
- and
- said first substrate layer being connected to said second substrate layer to form an inner space containing said electrolyte, wherein
- at least one of said anode layer and said cathode layer is formed of a cured or dried ink.
Dependencies are inferred from the claim text.