Nonaqueous cell having a MNO.sub.2 /poly-carbon fluoride cathode

• US 4,327,166 A
• Filed: 09/29/1980
• Issued: 04/27/1982
• Est. Priority Date: 09/29/1980
• Status: Expired due to Term

• Current Assignee: Eveready Battery Company Incorporated (Energizer Holdings, Inc.)
• Original Assignee: Union Carbide Corporation (Dow, Inc.)
• Inventors: Leger, Violeta Z.
• Primary Examiner(s): Lefevour, Charles F.
• Application Number:
  US06/191,997
• Time in Patent Office: 575 Days
• Field of Search: 429/194, 429/224
• US Class Current: 429/224
• CPC Class Codes: H01M 4/36 Selection of substances as active materials, active masses, active liquids
• CPC Class Codes: H01M 4/502 for non-aqueous cells H01M4/505 takes precedence
• CPC Class Codes: H01M 4/583 Carbonaceous material, e.g. graphite-intercalation compounds or CFx
• CPC Class Codes: H01M 4/5835 Comprising fluorine or fluoride salts
• CPC Class Codes: H01M 6/16 with organic electrolyte H01M6/18 takes precedence
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A nonaqueous cell employing an anode such as lithium, a liquid organic electrolyte and a cathode comprising manganese dioxide and a poly-carbon fluoride such as (C₂ F)_n or (CF_x)_n in which x is greater than 0 up to about 1.1.

Claims

1. A nonaqueous cell comprising an anode selected from the group consisting of lithium, potassium, sodium, calcium, magnesium, aluminum and alloys thereof, an electrolyte of an ionizing solute dissolved in an organic solvent and a cathode, said cathode comprising manganese dioxide having a water content of less than 1 weight per cent based on the weight of the manganese dioxide;

the improvement wherein a poly-carbon fluoride is added to the manganese dioxide cathode and has the formula (C_y F_x)_n wherein y is 1 or 2 and x is greater than 0 up to about 1.1.

2. The nonaqueous cell of claim 1 wherein y is 1 and x is between about 0.8 and 1.0.

3. The nonaqueous cell of claim 1 wherein the poly-carbon fluoride is (C₂ F)_n.

4. The nonaqueous cell of claim 1, 2 or 3 wherein the poly-carbon fluoride is present in an amount of 50% by weight or less based on the weight of the manganese dioxide.

5. The nonaqueous cell of claim 1, 2 or 3 wherein the poly-carbon fluoride is present in an amount of between about 10% by weight and 30% by weight based on the weight of the manganese dioxide.

6. The nonaqueous cell of claim 1, 2 or 3 wherein poly-carbon fluoride is mixed with the manganese dioxide.

7. The nonaqueous cell of claim 1, 2 or 3 wherein the poly-carbon fluoride is a layer disposed on the manganese dioxide.

8. The nonaqueous cell of claim 1, 2 or 3 wherein the cathode contains a binder and a conductive agent.