Patent ID: 8236444
Filing Date: 2012-08-07
Classification: H01M

Abstract:
1. An alkaline electrochemical cell comprising: a container having an open end; an inner gel electrode disposed in said container; an outer electrode disposed in said container, wherein the inner gel electrode is in the shape of a cylinder entirely disposed within the container, and the outer electrode is in the shape of a hollow tube, the cross-section of said tube being in the shape of a ring, and wherein the outer electrode surrounds the inner gel electrode and is entirely between the inner gel electrode and the container; a seal disposed in the open end of the container; and an electrically conductive cover engaged to the seal in the open end of the container such that the seal and cover close the open end of the container, wherein the cover comprises an integrally formed current collector portion of the cover and the current collector portion is in direct physical contact with one end of the inner gel electrode, and wherein the current collector portion extends into the inner gel electrode by a distance up to 20% of the longitudinal length of the inner gel electrode and a bottom surface of the current collector portion extends across at least 25% of a cross-sectional area of the inner gel electrode.