Nonaqueous cell utilizing a 3Me20x-based electrolyte

• US 3,996,069 A
• Filed: 06/30/1975
• Issued: 12/07/1976
• Est. Priority Date: 06/30/1975
• Status: Expired due to Term

• Current Assignee: Eveready Battery Company Incorporated (Energizer Holdings, Inc.)
• Original Assignee: Union Carbide Corporation (Dow, Inc.)
• Inventors: Kronenberg, Marvin L.
• Primary Examiner(s): Walton, Donald L.
• Application Number:
  US05/592,026
• Time in Patent Office: 526 Days
• Field of Search: 136/154, 136/6, 136/13, 136/155
• US Class Current: 429/328
• CPC Class Codes: H01M 6/16 with organic electrolyte H01M6/18 takes precedence

Abstract

A nonaqueous cell utilizing a highly active metal anode, such as lithium, a solid cathode selected from the group consisting of FeS₂, Co₃ O₄, V₂ O₅, Pb₃ O₄, In₂ S₃ and CoS₂, and a liquid organic electrolyte consisting essentially of 3-methyl-2-oxazolidone in combination with a low viscosity cosolvent, such as dioxolane, and a metal salt selected, for example, from the group consisting of MSCN, MCF₃ SO₃, MBF₄, MC10₄ and MM'"'"'F₆ wherein M is lithium, sodium or potassium and M'"'"' is phosphorus, arsenic or antimony.

Claims

1. A nonaqueous cell comprising a highly active metal anode, a solid cathode selected from the group consisting of FeS₂, Co₃ O₄, V₂ O₅, Pb₃ O₄, In₂ S₃ and CoS₂, and a liquid organic electrolyte consisting essentially of 3-methyl-2-oxazolidone in combination with at least one low viscosity cosolvent and a conductive solute.

2. The nonaqueous cell of claim 1 wherein said low viscosity solvent is selected from the group consisting of tetrahydrofuran, dioxolane, dimethoxyethane, dimethyl isoxazole, diethyl carbonate, ethylene glycol sulfite, dioxane and dimethyl sulfite.

3. The nonaqueous cell of claim 1 wherein said conductive solute is selected from the group consisting of MCF₃ SO₃, MSCN, MBF₄, MClO₄ and MM'"'"'F₆ wherein M is lithium, sodium or potassium and M'"'"' is phosphorus, arsenic or antimony.

4. The nonaqueous cell of claim 1 wherein said active metal anode is selected from the group consisting of lithium, potassium, sodium, calcium, magnesium and alloys thereof.

5. The nonaqueous cell of claim 2 wherein said conductive solute is selected from the group consisting of MSCN, MCF₃ SO₃, MBF₄, MClO₄ and MM'"'"'F₆ wherein M is lithium, sodium or potassium and M'"'"' is phosphorus, arsenic or antimony.

6. The nonaqueous cell of claim 3 wherein said low viscosity cosolvent is selected from the group consisting of tetrahydrofuran, dioxolane, dimethoxyethane, dimethyl isoxazole, diethyl carbonate, ethylene glycol sulfite, dioxane and dimethyl sulfite.

7. The nonaqueous cell of claim 5 wherein said active metal anode is selected from the group consisting of lithium, potassium, sodium, calcium, magnesium and alloys thereof.

8. The nonaqueous cell of claim 6 wherein said active metal anode is selected from the group consisting of lithium, potassium, sodium, calcium, magnesium and alloys thereof.

9. The nonaqueous cell of claim 1 wherein said active metal anode is lithium, said low viscosity cosolvent is tetrahydrofuran, and said conductive solute is selected from the group consisting of LiBF₄, LiClO₄ and LiCF₃ SO₃.

10. The nonaqueous cell of claim 1 wherein said active metal anode is lithium, said low viscosity cosolvent is dioxolane, and said conductive solute is selected from the group consisting of LiBF₄, LiClO₄ and LiCF₃ SO₃.

11. The nonaqueous cell of claim 7 wherein said solid cathode is FeS₂.

12. The nonaqueous cell of claim 7 wherein said solid cathode is Co₃ O₄.

13. The nonaqueous cell of claim 7 wherein said solid cathode is V₂ O₅.

14. The nonaqueous cell of claim 7 wherein said solid cathode is Pb₃ O₄.

15. The nonaqueous cell of claim 7 wherein said solid cathode is In₂ S₃.

16. The nonaqueous cell of claim 7 wherein said solid cathode is CoS₂.