Zinc polymer thick film composition

• US 20040009398A1
• Filed: 05/16/2003
• Published: 01/15/2004
• Est. Priority Date: 06/19/2002
• Status: Abandoned Application

• Current Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Original Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Inventors: Dorfman, Jay Robert
• Application Number:
  US10/439,461
• Publication Number:
  US 20040009398A1
• Time in Patent Office: Days
• US Class Current: 429/217
• CPC Class Codes: H01M 2004/027 Negative electrodes
• CPC Class Codes: H01M 4/06 Electrodes for primary cells
• CPC Class Codes: H01M 4/244 Zinc electrodes
• CPC Class Codes: H01M 4/42 Alloys based on zinc
• CPC Class Codes: H01M 4/621 Binders
• CPC Class Codes: H01M 4/622 being polymers
• CPC Class Codes: H01M 4/625 Carbon or graphite
• CPC Class Codes: H01M 6/40 Printed batteries , e.g. thin film batteries
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

The invention is directed to a zinc composition comprising finely divided zinc particles dispersed in organic medium wherein the organic medium comprises a solvent and a polymer selected from polyhydroxy ether, polyurethane, co-polymer of acrylonitrile/vinylidene chloride and mixtures thereof. The invention is further directed to the use of the composition as an electrode such as the anode in a printed battery.

Claims

1. A zinc composition utilized in the formation of an electrode comprising

(a) finely divided zinc particles dispersed in

(b) organic medium, wherein the organic medium comprises a solvent and a polymer selected from polyhydroxy ether, polyurethane, copolymer of acrylonitrile/vinylidene chloride or mixtures thereof.

2. The composition of claim 1 wherein said composition further comprises an electrically conductive carbon component selected from carbon black, graphite, or mixtures thereof.

3. The composition of claim 1 wherein said polymer has a glass transition temperature of greater than about 50°

C.

4. A method of increasing the capacity of an electrode which comprises utilizing in the manufacture of said electrode a composition comprising (a) finely divided zinc particles dispersed in (b) an organic medium wherein the organic medium comprises a solvent and a polymer selected from polyhydroxy ether, polyurethane, co-polymer of acrylonitrile/vinylidene chloride or mixtures thereof.

5. The method of claim 4 wherein said polymer has a glass transition temperature of greater than about 50°

C.

7. The method of claim 4 wherein said composition further comprises an electrically conductive carbon component selected from carbon black, graphite, or mixtures thereof.

9. A method according to claim 4 further comprising the purpose of forming an anode in a battery.

10. A method according to claim 4 wherein said manufacture comprises a screen-printing process.

11. A battery made in accordance to the method of claim 9.

6. The use of a composition comprising (a) finely divided zinc particles dispersed in (b) an organic medium wherein the organic medium comprises a solvent and a polymer selected from polyhydroxy ether, polyurethane, co-polymer of acrylonitrile/vinylidene chloride or mixtures thereof for the purpose of increasing the capacity of an electrode.

8. A use according to claim 6 further comprising the purpose of forming an anode in a battery.