Battery laminate with improved electrolyte and anode or cathode

Details Battery laminate with improved electrolyte and anode or cathode Battery laminate with improved electrolyte and anode or cathode

1994-08-02

1997-02-25

Bell, Bruce F.

Metal working

Method of mechanical manufacture

Electrical device making

296231, H01M 600

Patent

active

056055501

ABSTRACT:
In making a laminar assembly for use in the battery, a layer of battery electrode material is deposited onto a substrate surface and the battery electrode material is caused to have an uneven surface. Then an electrolyte layer is deposited onto the uneven surface of the battery electrode material. Where the method calls for first depositing the electrolyte material, then electrolyte material is deposited onto the substrate layer where the electrolyte layer is caused to have an uneven surface. Thereafter, the battery electrode material is deposited onto the uneven surface of the electrolyte material. In both cases, slippage between the battery electrode material and electrolyte material is reduced during cutting, folding and other handling process in making a laminar battery, thereby reducing the probability of shorts in the battery. In order to form the cathode or electrolyte layer, a pump is used to squeeze a viscous cathode or electrolyte material through a nozzle onto a substrate surface and the viscous material and substrate layer are passed between two pressing surfaces moving in the same direction pressing the viscous material onto the substrate layer. The two pressing surfaces are spaced apart by a predetermined distance so that the viscous material is pressed into a layer with a predetermined thickness with no pin holes therein so that the material adheres to the substrate layer.

REFERENCES:
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patent: 4925751 (1990-05-01), Shackle et al.
patent: 4935317 (1990-06-01), Fauteux et al.
patent: 4997732 (1991-03-01), Austin et al.
patent: 5162178 (1992-11-01), Ohsawa et al.
patent: 5272017 (1993-12-01), Swathirajan et al.
patent: 5435054 (1995-07-01), Tonder et al.

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