Method of making a gel electrolyte bonded rechargeable electrochemical cell
AssigneeMotorola, Inc.
InventorsManuel Oliver, Paul J. Gies, Shekhar L. Pendalwar, Christen E. Coalson, Florence O. Eschbach
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Abstract
An electrochemical cell 10 includes first and second electrodes 12 and 14 with an electrolyte system 26 disposed therebetween. The electrolyte system includes at least a first and second layer 28 and 30, the second layer 30 being used to absorb an electrolyte active species and to adhere the adjacent layer of electrode material to the electrolyte 26. The electrolyte system further includes a process for packaging and curing the electrolyte after it has been incorporated into a discrete battery device.
Claims12
A method of making a rechargeable electrochemical cell including first and second electrodes, and a porous separator element having first and second major sides, said method comprising the steps of:
- coating at least one of said electrodes or said separator with a layer of a bonding paste comprising a gelling polymer having an electrolyte active species dispersed therein;
- bonding said first and second electrodes to opposite sides of said separator element;
- and curing said bonding paste.
A method as in claim 11, wherein said solvent is selected from the group consisting of propylene carbonate, ethylene carbonate, diethyl carbonate, dimethyl carbonate, dipropylcarbonate, dimethylsulfoxide, acetonitrile, dimethoxyethane, tetrahydrofuran, n-methyl-2-pyrrolidone, and combinations thereof.
Dependencies are inferred from the claim text.