Solid state electrochemical devices
AssigneeAdaptive Materials, Inc.
InventorsAaron T. Crumm, John W. Halloran
Life of this patent
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Abstract
A method for preparation of a solid state electrochemical device having a cathode, and anode and an electrolyte positioned between the cathode and the anode is disclosed, comprising the steps of forming a controlled geometry feedrod having a cross sectional area, having at least a first extrusion compound and a second extrusion compound, and co-extruding the controlled geometry feed rod through a reduction die at least once to achieve a desired reduction in cross sectional area. Such microfabrication by thermoplastic co-extrusion enhances production of complex and multiphase electrodes and electrolytes.
Claims29
A method for preparation of a solid state electrochemical device having a cathode, an anode and an electrolyte positioned between the cathode and the anode, comprising in combination, the steps of:
- forming a controlled geometry feedrod having a cross sectional area, comprising at least a first extrusion compound and a second extrusion compound;
- and
- co-extruding the controlled geometry feedrod through a reduction die at least once to create a co-extruded article having a desired reduction in the cross sectional area.
A method for preparation of a solid state electrochemical device having a cathode, and anode and an electrolyte positioned between the cathode and the anode, comprising in combination, the steps of:
- forming a feedrod having a cross sectional area, comprising at least a first extrusion compound and a second extrusion compound, wherein the feedrod holds its shape upon forming;
- and
- co-extruding the feedrod through a reduction die at least once to produce a coextruded article having a desired reduction in the cross sectional area.
A method for preparation of a solid state electrochemical device having a cathode, and anode and an electrolyte positioned between the cathode and the anode, comprising in combination, the steps of:
- forming a feedrod by:
- molding a fugitive material;
- molding an anode around the fugitive material;
- molding an electrolyte around the anode;
- and
- molding a cathode around the electrolyte;
- and
- co-extruding the feedrod through a reduction die at least once to achieve a desired reduction in the cross sectional area of the feedrod, thereby producing a coextruded article.
A method for preparation of a solid state electrochemical device having a cathode, and anode and an electrolyte positioned between the cathode and the anode, comprising in combination, the steps of:
- forming a feedrod having a cross sectional area, wherein at least one of the cathode and the anode is formed as a powder filled polymer having at least first and second regions, with the first region comprising an active area and the second region comprising a current collector;
- and
- co-extruding the controlled through a reduction die at least once to achieve a desired reduction in the cross sectional area of the feedrod.
Dependencies are inferred from the claim text.