Method for producing a sheet-like plate
AssigneeFuji Photo Film Co., Ltd.
InventorsKenichi Fukumura, Yoshiaki Noda
Life of this patent
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Abstract
There is disclosed a method for producing a sheet-like electric cell plate and an electrochemical cell produced by using the plate. The sheet-like electric cell plate is produced by a method which comprises discharging an electrode material coating solution from an extrusion-type slot die and coating the solution onto an electrically-conductive support running around a backup roll. The electrochemical cell comprises a positive electrode plate, a negative electrode plate, both of which plates are produced by the above method, and an electrolyte.
Claims18
A method for producing a sheet-like electric cell plate of an electrochemical cell comprising a positive electrode, a negative electrode, and an electrolyte, comprising the step of:
- discharging an electrode material coating solution from an outlet of an extrusion-type slot die onto an electrically-conductive support running around a backup roll wherein:
- (i) said extrusion-type slot die is positioned in a vertical line through the center of said backup roll;
- (ii) a vacuum chamber is provided to seal up space among the slot die and the support;
- (iii) the coating solution is discharged from the outlet of the slot die towards the center of the backup roll along said vertical line, so as to vertically coat said coating solution onto said support,
- (iv) the outlet of the slot die is 0.1 to 3.0 mm from the support;
- and
- (v) said electrode material coating solution has a viscosity of from 0.5 to 500 Pas at 25.degree. C., and comprises an electrically-conductive agent and a binder.
A method for producing a sheet-like electric cell plate of an electrochemical cell comprising a positive electrode, a negative electrode, and an electrolyte, comprising the step of:
- discharging an electrode material coating solution from an outlet of an extrusion-type slot die onto an electrically-conductive support running around a backup roll, wherein:
- (i) said extrusion-type slot die is positioned in a vertical line through the center of said backup roll;
- (ii) the coating solution is discharged from the outlet of the slot die towards the center of the backup roll along said vertical line;
- (iii) the space between the support and the slot die is filled with said coating solution so as to vertically coat said coating solution onto said support;
- (iv) the outlet of the slot die is 0.1 to 3.0 mm from the support;
- and
- (v) said electrode material coating solution has a viscosity of from 0.5 to 500 Pas at 25.degree. C., and comprises an electrically-conductive agent and a binder.
Dependencies are inferred from the claim text.