Patent ID: 9413048
Filing Date: 2016-08-09
CPC Classification: H01M,Y02E,Y10T

Claim Text:
1. An electrochemical cell comprising: a housing; a fuel electrode comprising a metal fuel; an oxidant electrode spaced from the fuel electrode and mounted in an opening of the housing, having a fuel electrode-facing side and an oxidant-facing side; and a liquid ionically conductive medium for conducting ions between the fuel and oxidant electrodes to support electrochemical reactions at the fuel and oxidant electrodes; the fuel electrode and the oxidant electrode being configured to, during discharge, oxidize the metal fuel at the fuel electrode and reduce a gaseous oxidant at the oxidant electrode to generate a discharge potential difference therebetween for application to a load; and the oxidant electrode comprising: an active layer in contact with the liquid ionically conductive medium that is configured to participate in the electrochemical reactions at the oxidant electrode; a current collector electrically coupled to the active layer; and an air permeable graphite layer comprising a mixture of graphite particles and solvophobic binder separately applied on a surface of the oxidant electrode that is distal from the active layer and on the oxidant-facing side, the graphite layer providing an outer surface of the oxidant electrode along at least a portion of a peripheral border thereof for sealing to the housing, and wherein at least a portion of a peripheral border of the oxidant electrode extends into a sealant space of said housing and is electrically coupled to a conductor within said sealant space; wherein the sealant space contains an electrically non-conductive adhesive sealant such that the conductor is electrically insulated from said housing and wherein the conductor extends out from the housing for coupling to a terminal of the cell; wherein said adhesive sealant is applied to at least a portion of the graphite layer of the oxidant electrode along said peripheral border and wherein the adhesive sealant couples the portion of the graphite layer to a portion of the housing so as to adhere the oxidant electrode to the housing.