Patent ID: 6296961
Filing Date: 2001-10-02
Classification: H01M,Y02E

Abstract:
A cathode assembly precursor for use in an elongate air depolarized electrochemical cell, said cathode assembly precursor comprising:(a) a closed-loop elongate cathode current collector having a side wall extending along a length thereof, and having a thickness, a top and a top edge, a bottom, a first outer surface and a first inner surface, and an array of perforations extending through the thickness of the side wall, from the outer surface of the side wall to the inner surface of the side wall; and(b) a carbon catalyst on at least one of the first inner and first outer surfaces of the side wall of said cathode current collector and extending into and through the perforations in said cathode current collector such that distal surface portions of the carbon catalyst are interlocked with said cathode current collector about perimeter edges of the respective perforations at the other of the at least first inner surface and first outer surface of said cathode current collector,the resulting cathode assembly precursor thus having a second outer surface and a second inner surface, one of the second outer surface and the second inner surface of said cathode assembly precursor being defined in first part by the distal surface portions of the carbon catalyst and in second part by the respective surface of the cathode current collector.