Electrochemical cell with improved cathode current collector...

Details Electrochemical cell with improved cathode current collector... Electrochemical cell with improved cathode current collector...

H - Electricity

01

M

319/32, 319/73

H01M 6/02 (2006.01) H01M 4/08 (2006.01) H01M 4/86 (2006.01) H01M 6/14 (2006.01)

Patent

CA 1139834

D-20145 ELECTROCHEMICAL CELL WITH IMPROVED CATHODE CURRENT COLLECTOR AND METHOD ABSTRACT OF THE DISCLOSURE Disclosed is a primary electrochemical cell having an improved cathode current collector and a method for making the current collector. The cell comprises an oxidizable active anode material; and electrolytic solution comprising a reducible soluble cathode and an electrolyte solute dissolved therein; and a cathode current collector comprising a layer of finely- divided catalyst for reducing the solvent, bonded to an inert, electrically-conductive substrate. Preferably, a bonding layer, comprising a finely-divided polymer and a minor amount of conductive material, bonds the catalyst layer to the substrate. The bonding and catalyst layers preferably can be formed by sequentially applying respective dispersions thereof to the substrate, drying, and heating to bond the materials. Soluble cathode cells employing cathode current collectors of the type described have exceptionally rapid discharge properties. -1-

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