Method for producing a solid electrolyte cell

Claim 1

A method for producing a cell comprising the steps: (a) depositing an active cathode material containing at least ethylene carbonate and propylene carbonate onto a first conductive current collector sheet and within an adhesive coated frame positioned at the peripheral area of the current collector sheet; (b) depositing on the cathode material propylene carbonate or ethylene carbonate and propylene carbonate and allowing said deposit to be absorbed into the cathode material (c) preparing a separator strip as follows: (a') dissolving ethylene carbonate in propylene carbonate to form a solution; (b') dissolving poly(ethylene oxide) in a solvent; (c') adding a metal salt and a solvent along with the solution of step (a') to the dissolved poly(ethylene oxide) solution of step (b') to form a mix and mixing the mixture to form a homogeneous mixture and drying said mixture to less than about 30 ppm water and then forming a separator strip from said mixture; (d) placing the separator strip onto the cathode material, said separator strip being smaller than the area of the cathode collector sheet and larger than the exposed area of the cathode material thereby leaving a portion of the adhesive coated frame area exposed; (e) placing an anode strip onto the separator and within the frame thereby leaving an exposed portion of the area of ht adhesive coated frame; (f) placing a second conductive current collector substantially the size of the first conductive current collector onto the anode and exposed area of the adhesive coated frame; and (g) heating at least the frame of the cell assembly at a pressure and temperature for a period of time sufficient to secure the first current collector to the adhesive coated frame on one side and the opposite side of the adhesive coated frame to the second current collector thereby producing a sealed cell.

Claim 2

A method for producing a cell comprising the steps: (a) depositing an active cathode material containing at least ethylene carbonate and propylene carbonate onto a first conductive current collector sheet and within an adhesive coated frame positioned at the peripheral area of the current collector sheet; (b) depositing on the cathode material propylene carbonate or ethylene carbonate and propylene carbonate and allowing said deposit to be absorbed into the cathode material (c) preparing a separator strip as follows: (a') dissolving ethylene carbonate in propylene carbonate to form a solution; (b') dissolving poly(ethylene oxide) in a solvent; (c') adding a metal salt and a solvent along with the solution of step (a') to the dissolved poly(ethylene oxide) solution of step (b') to form a mix and mixing the mixture to form a homogeneous mixture and drying said mixture to less than about 30 ppm water and then forming a separator strip from said mixture; (d) placing the separator strip onto the cathode material, said separator strip being smaller than the area of the cathode collector sheet and larger than the exposed area of the cathode material thereby leaving a portion of the adhesive coated frame area exposed; (e) placing an anode strip onto the separator and within the frame thereby leaving an exposed portion of the area of ht adhesive coated frame; (f) placing a second conductive current collector substantially the size of the first conductive current collector onto the anode and exposed area of the adhesive coated frame; and (g) heating at least the frame of the cell assembly at a pressure and temperature for a period of time sufficient to secure the first current collector to the adhesive coated frame on one side and the opposite side of the adhesive coated frame to the second current collector thereby producing a sealed cell.