Glass to metal seal

An electrochemical cell, comprising:

• a) a casing of electrically conductive material;
• b) an anode and a cathode housed inside the casing and having a separator disposed therebetween, wherein the anode is of lithium and the cathode comprises silver vanadium oxide contacted to a current collector;
• c) an electrolyte activating the anode and the cathode;
• d) a lid of electrically conductive material closing the open end of the casing;
• e) a terminal lead having at least a portion of its surface roughened, wherein a first terminal lead end is disposed inside the casing connected to the current collector and a second terminal lead end is disposed outside the casing for connection to a load;
• and
• f) a sleeve sealed in a lid opening and comprising a sleeve opening extending to first and second sleeve ends, wherein the terminal lead is received in the sleeve opening with the first sleeve end sealed to the terminal lead proximate the first terminal lead end and the second sleeve end sealed to the terminal lead proximate the second lead end.

An electrochemical cell, which comprises:

• a) an anode comprising lithium;
• b) a cathode of at least one cathode active material selected from the group consisting of manganese dioxide, silver vanadium oxide, copper silver vanadium oxide, titanium disulfide, copper oxide, copper sulfide, iron sulfide, iron disulfide, carbon, and fluorinated carbon (CFX), wherein at least one of the anode and the cathode includes a current collector;
• c) an electrolyte activating the anode and the cathode having a separator disposed therebetween and housed in an electrical association with each other in a casing having an open end;
• d) a lid of electrically conductive material closing the open end of the casing;
• e) a terminal lead having a first terminal lead end disposed inside the casing connected to the current collector and a second terminal lead end disposed outside the casing for connection to a load;
• and
• f) a sleeve sealed in the lid opening and comprising a sleeve opening extending to first and second sleeve ends, wherein the terminal lead is received in the sleeve opening with the first sleeve end sealed to the terminal lead proximate the first terminal lead end and the second sleeve end sealed to the terminal lead proximate the second terminal lead end.

A method for providing an electrochemical cell, comprising the steps of:

• a) providing a casing of electrically conductive material having an open end;
• b) providing a first and a second electrodes having a separator disposed therebetween inside the casing in electrical association with each other, wherein at least one of the electrodes includes a current collector;
• c) providing an electrolyte activating the first and the second electrodes;
• d) providing a lid of electrically conductive material having an opening therein, the lid closing the open end of the casing;
• e) providing a terminal lead, having a first terminal lead end and a second terminal lead end;
• f) providing a sleeve comprising a sleeve opening extending to first and second sleeve ends;
• g) positioning the terminal lead in the sleeve opening and sealing the first sleeve end to the terminal lead proximate the first terminal lead end and the second sleeve end to the terminal lead proximate the second terminal lead end;
• and
• h) sealing the sleeve in the lid opening with the first terminal lead end connected to the current collector inside the casing and the second terminal lead end disposed outside the casing for connection to a load.