Method of preparing electrochemical cells
First Claim
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1. A method of activating an electrochemical cell precursor package which comprises the steps of:
- (a) forming an electrochemical cell precursor package, said electrochemical cell precursor package including a moisture-impervious material having a sealable aperture therethrough, said material containing a porous structure comprising;
(i) an anode(ii) a cathode; and
(iii) a polymeric matrix interposed between said anode and said cathode; and
(b) adding a quantity of activation fluid through said sealable aperture of the electrochemical cell precursor package at a rate such that substantially all of the activation fluid is incorporated into the porous structure.
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Abstract
A method for activating the anode, cathode, and polymeric matrix components of an electrochemical cell is provided. Subsequent to forming the electrochemical cell precursor a quantity of activation fluid comprising electrolyte solvent and an inorganic salt is added into the electrochemical cell precursor at a rate such that substantially all of the activation fluid is incorporated into the electrochemical cell precursor. The method produces electrochemical cells having consistent amounts of solvent and salts therein.
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Citations
20 Claims
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1. A method of activating an electrochemical cell precursor package which comprises the steps of:
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(a) forming an electrochemical cell precursor package, said electrochemical cell precursor package including a moisture-impervious material having a sealable aperture therethrough, said material containing a porous structure comprising; (i) an anode (ii) a cathode; and (iii) a polymeric matrix interposed between said anode and said cathode; and (b) adding a quantity of activation fluid through said sealable aperture of the electrochemical cell precursor package at a rate such that substantially all of the activation fluid is incorporated into the porous structure. - View Dependent Claims (2, 3, 4, 5, 13)
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6. A method of preparing an electrochemical cell, said method comprising the steps of:
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forming an anode composition comprising a carbon material, a first polymer, and a first plasticizer; forming a cathode composition comprising a cathode active material, a second polymer, and a second plasticizer; forming a polymeric matrix comprising a third polymer and a third plasticizer; removing said first, second, and third plasticizers to form a porous structure having an anode, a cathode, and a polymeric matrix interposed therebetween; placing the porous structure into a package having a sealable aperture therethrough; and adding a quantity of activation fluid through the aperture at a rate such that substantially all of the activation fluid is incorporated into the porous structure prior to sealing of the aperture. - View Dependent Claims (7, 8, 9, 10, 11, 12, 14, 15)
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16. A method of preparing an electrochemical cell, said method comprising the steps of:
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(a) placing into a moisture-impermeable package a porous structure including; (i) an anode; (ii) a cathode; (iii) a polymeric matrix interposed between said anode and said cathode; (b) introducing activation fluid into the package at a rate such that substantially all of the activation fluid is incorporated into the porous structure prior to sealing of the package; and (c) sealing the package. - View Dependent Claims (17, 18, 19, 20)
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Specification