Patent ID: 6261709
Filing Date: 2001-07-17
Classification: H01M,Y02E

Abstract:
An elongate air depolarized electrochemical cell, comprising:(a) a cathode, including an air cathode assembly and a cathode terminal electrically connected to said air cathode assembly;(b) a separator disposed inwardly of said air cathode assembly;(c) a bottom member defining a bottom of said cell;(d) an anode cavity defined inwardly of said separator and said bottom member;(e) a mass of electroactive anode material in said anode cavity, said mass of electroactive anode material having a density;(f) an anode current collector extending into said mass of electroactive anode material, in electrical contact with said mass of electroactive anode material;(g) electrolyte dispersed in said electroactive anode material, in said cathode, and in said separator; and(h) a mass-control chamber in said anode cavity, closed to entry of said anode material and said electrolyte thereinto, density of material contained in said mass-control chamber being no more than 80% of the density of said mass of electroactive anode material.