Alkaline cell having a cathode including a titanate additive

• US 5,569,564 A
• Filed: 06/07/1995
• Issued: 10/29/1996
• Est. Priority Date: 06/07/1995
• Status: Expired due to Term

• Current Assignee: Energizer Brands, LLC (Energizer Holdings, Inc.)
• Original Assignee: Eveready Battery Company Incorporated (Energizer Holdings, Inc.)
• Inventors: Nardi, John C., Swierbut, Wendi M.
• Primary Examiner(s): Kalafut, Stephen
• Assistant Examiner(s): LILLEY, RICHARD
• Application Number:
  US08/479,591
• Time in Patent Office: 510 Days
• Field of Search: 429/224
• US Class Current: 429/224
• CPC Class Codes: H01M 2300/0014 Alkaline electrolytes
• CPC Class Codes: H01M 4/50 of manganese
• CPC Class Codes: H01M 4/62 Selection of inactive substances as ingredients for active masses, e.g. binders, fillers

Abstract

A cathode for use in an electrochemical cell having an anode and an electrolyte. The cathode includes a manganese dioxide active material and a titanate additive which includes at least one of BaTiO₃ or K₂ TiO₃. The cathode of the present invention is particularly adapted for use in an electrochemical cell having a zinc anode and an alkaline electrolyte.

Claims

1. An electrochemical cell having a zinc anode, a cathode, and an alkaline electrolyte, said cathode comprising a manganese dioxide active material and an additive comprising a titanate.

2. The electrochemical cell as defined in claim 1, wherein said additive constitutes between about 0.1 to 10 weight percent of said cathode.

3. An electrochemical cell having a zinc anode, a cathode, and an alkaline electrolyte, said cathode comprising a manganese dioxide active material and an additive comprising BaTiO₃.

4. The electrochemical cell as defined in claim 3, wherein said additive constitutes between about 0.1 to 10 weight percent of said cathode.

5. An electrochemical cell having a zinc anode, a cathode, and an alkaline electrolyte, said cathode comprising a manganese dioxide active material and an additive comprising K₂ TiO₃.