Electrochemical cell

• US 5,532,087 A
• Filed: 12/22/1994
• Issued: 07/02/1996
• Est. Priority Date: 12/22/1994
• Status: Expired due to Fees

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Wu, Han, Goel, Sanjay, Nerz, John E.
• Primary Examiner(s): Willis, Jr., Prince
• Assistant Examiner(s): CHANEY, CAROL DIANE
• Application Number:
  US08/362,347
• Time in Patent Office: 558 Days
• Field of Search: 429/229, 429/142, 429/248
• US Class Current: 429/248
• CPC Class Codes: H01M 10/30 Nickel accumulators H01M10/34 takes precedence
• CPC Class Codes: H01M 4/74 Meshes or woven material; Expanded metal
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

An electrochemical cell (10) having a first electrode (20) and second electrode (80) and a separator (40) disposed therebetween further includes a layer of material disposed between at least one of the electrodes and the separator (52). The layer (52) is adapted to reduce the likelihood of cell failure by subduing the dendritic growth of at least one of the electrodes. The layer (52) is a layer of a metal mesh screen and may further be adapted to be used as the current collector for collecting current generated by the cell (10).

Claims

1. An electrochemical cell having a first zinc foil electrode, a second electrode, and a separator disposed therebetween, said electrochemical cell further including a current collecting layer disposed between said separator and said first zinc foil electrode.

2. An electrochemical cell as in claim 1, further including a current collecting layer disposed between said separator and said second electrode.

3. An electrochemical cell as in claim 1, wherein said first electrode is fabricated of zinc.

4. An electrochemical cell as in claim 1, wherein said current collecting layer is fabricated of an electrically conductive mesh.

5. An electrochemical cell as in claim 4, wherein said current collecting layer is a nickel mesh.