Electrochemical cell

Abstract

An electrochemical cell that converts chemical energy to electrical energy includes a cathode with an active material of fluorinated carbon on a perforated metal cathode current collector, a lithium anode on a perforated metal anode current collector, a stepped header, a stable electrolyte, and a separator. In various embodiments, an anode current collector design, a cathode current collector design, a stepped header design, a cathode formulation, an electrolyte formulation, a separator, and a battery incorporating the electrochemical cell are provided.

1 . A cell comprising:
 a housing;   an anode current collector, in the housing, including a first connection, and the anode current collector including a first side with perforations and a second side with perforations, the anode current collector further including a central portion that connects the first side and the second side;   a cathode current collector, in the housing, including a second connection;   a first anode, in the housing, provided between the cathode current collector and the first side;   a second anode, in the housing, provided between the cathode current collector and the second side; and   a cathode, in the housing, provided adjacent to the cathode current collector.   
     
     
         2 . The cell of  claim 1 , the perforations of the first side and the perforations of the second side are diamond in shape. 
     
     
         3 . The cell of  claim 1 ,
 the first side connected to a first side portion of the central portion, and   the second side connected to a second side portion of the central portion.   
     
     
         4 . The cell of  claim 3 , the central portion having at least one aperture. 
     
     
         5 . The cell of  claim 1 , the first side being flat and the second side being flat. 
     
     
         6 . The cell of  claim 3 , the first side having a first shape and the second side having a second shape, and the first shape and the second shape being the same shape. 
     
     
         7 . The cell of  claim 6 , the same shape including a first end and a second end, with the first end being rounded and the second end defined by two corners and a linear edge extending between such two corners. 
     
     
         8 . The cell of  claim 7 , further including a header assembly that is attached to the housing. 
     
     
         9 . The cell of  claim 8 , the header assembly provided along the linear edge. 
     
     
         10 . The cell of  claim 1 , the first connection, of the anode current collector, being a first tab, and the first tab extending from the first side of the anode current collector. 
     
     
         11 . The cell of  claim 10 , the second connection, of the cathode current collector, being a second tab, and the second tab extending from the cathode current collector. 
     
     
         12 . The cell of  claim 11 , the first connection being a negative connection of the anode and the second connection being a positive connection of the cathode. 
     
     
         13 . The cell of  claim 12 , further including a header assembly that is attached to the housing, and the first tab and the second tab respectively connected to respective pass-through connections, through the header assembly, so as to provide electrical connection exterior of the cell. 
     
     
         14 . The cell of  claim 1 , the anode constituted by a lithium foil. 
     
     
         15 . The cell of  claim 1 , the cathode constituted by a cathode pellet. 
     
     
         16 . The cell of  claim 1 , wherein:
 the first side connected to a first side portion of the central portion, and   the second side connected to a second side portion of the central portion; and   the central portion having a plurality of apertures that include a first aperture and a second aperture, and the first aperture positioned over the second aperture in the central portion, and the first aperture and the second aperture each being centered in the central portion between the first side portion and the second side portion.