Method of making a cathode for an electrochemical cell
AssigneeGTE Laboratories Incorporated
InventorsFranz Goebel, Nikola Marincic
Life of this patent
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Abstract
A carbon cathode structure is described comprising an aggregate of discrete, porous, semi-rigid carbon conglomerates which are impressed from both sides onto a screen-like substrate for physical support thereby. The substrate additionally functions as a current collector by uniformly and electrically contacting the interior of the resulting structure. Electrolyte-conducting channels formed between adjacent conglomerates of the thick, porous cathode structure serve to maximize the cell rate capability and cell discharge capacity.
Claims7
A method for constructing a large, highly active cathode electrode for use in an electrochemical cell comprising the steps of:
- forming a porous, semi-rigid dough of cathode material;
- drying the dough;
- breaking up the dried dough to form a mass of discrete porous conglomerates;
- and
- pressing a quantity of the conglomerates onto a rigid electrically conductive screen-like member so that the conglomerates substantially fill the interstices therein and are structurally supported by the interstice-defining members of the screen-like member.
Dependencies are inferred from the claim text.