Claims
- 1. A coextrusion process for simultaneously producting a unitary electrode assembly composed of anode, cathode, and separator layers formed as a multiple layer web, comprising:
introducing into an anode an ultrahigh molecular weight polyolefin, a plasticizer, and an anode active material to form an anode extrudate layer; introducing into a cathode extruder an ulrahigh molecular weight polyolefin, a plasticizer, and a cathode active material to form a cathode extrudate layer; introducing into a separator extruder an ultrahigh molecular weight polyolefin, a plasticizer, and an electrically nonconductive material filler to form a separator extrudate layer; and forming a coherent bond between adjacent ones of the anode, cathode, and separator extrudate layers to form a multiple layer web in which the separator extrudate layer is positioned between anode and cathode extrudate layers.
- 2. The method of claim 1, in which the forming of a coherent bond comprises coextruding the anode, cathode, and separator extrudate layers.
- 3. The method of claim 1, in which the forming of a coherent bond comprises laminating together the anode, cathode, and separator extrudate layers.
- 4. The method of claim 1, further comprising bonding a different one of a pair of current collector layers to each of the anode extrudate layer and the cathode extrudate layer to form an electrochemical cell.
RELATED APPLICATIONS
[0001] This application is a division of U.S. patent application Ser. No. 09/507,174, filed Feb. 18, 2000, which claims priority from U.S. Provisional Patent Application No. 60/120,842, filed Feb. 19, 1999.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60120842 |
Feb 1999 |
US |
Divisions (1)
|
Number |
Date |
Country |
Parent |
09507174 |
Feb 2000 |
US |
Child |
10371993 |
Feb 2003 |
US |