Patent ID: 6482543
Filing Date: 2002-11-19
Classification: H01M

Abstract:
An alkaline cell having a housing, an anode material comprising zinc and a cathode material comprising manganese dioxide, and an alkaline electrolyte, wherein the cathode is located annularly along a major portion of the length of the inside surface of the housing, wherein the cathode comprises an outer surface and an inside surface, the cathode outer surface contacting the housing and the cathode inside surface facing the cell's interior, wherein the cathode inside surface comprises at least one surface indentation, wherein the surface indentation comprises a channel bounded by a portion of the cathode inside surface, said channel facing the cell's interior, wherein said cell comprises an anode current collector within said anode, wherein a first portion of said anode current collector is positioned away from said channel and a second portion of said anode current collector extends into said channel without contacting said cathode.