Rechargeable solid state chromium-fluorine-lithium electric battery

• US 6,686,096 B1
• Filed: 08/04/2000
• Issued: 02/03/2004
• Est. Priority Date: 01/27/2000
• Status: Expired due to Term

• Current Assignee: Thunder Sky Winston Battery Technology Limited
• Original Assignee: New Billion Investments Limited
• Inventors: Chung, Hing Ka
• Primary Examiner(s): Ryan; Patrick
• Assistant Examiner(s): Alejandro; Raymond
• Application Number:
  US09/632,907
• Time in Patent Office: 1,278 Days
• Field of Search: 429/304,306,307,322,324,321,326,325,330,331,332,333 252/62.2
• US Class Current: 429/304
• CPC Class Codes: H01M 10/05 Accumulators with non-aqueous electrolyte H01M10/39 takes precedence
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 4/02 Electrodes composed of, or comprising, active material
• CPC Class Codes: H01M 4/131 Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
• CPC Class Codes: H01M 4/38 of elements or alloys
• CPC Class Codes: H01M 4/485 of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy H01M4/505, H01M4/525 take precedence
• CPC Class Codes: H01M 4/505 of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
• CPC Class Codes: H01M 4/62 Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
• CPC Class Codes: H01M 50/103 prismatic or rectangular H01M50/109, H01M50/11 take precedence
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y10T 29/49108 Electric battery cell making

Abstract

There is disclosed a solid state rechargeable electric battery (10) including a number of cathode plates (7) interposed among a number of anode plates (8) in which the cathode plate (7) includes an aluminium foil (41) coated with a layer of mixture (43) of lithium manganate, chromium and fluoride. The anode plate (8) includes a copper foil (47) coated with a layer of mixture (49) containing petroleum coke. Provided among the cathode plates (7) and anode plates (8) is a solid state electrolyte (14) made up of lithium perchlorate dissolved in ethylene carbonate and diethyl carbonate.

Claims

1. A solid state rechargeable electric battery including at least an anode member and at least a cathode member, characterized in that a substantially solid electrolyte is provided between said at least one anode member and said at least one cathode member, wherein said electrolyte consists essentially of lithium perchlorate dissolved in ethylene carbonate and diethyl carbonate.

2. A battery including at least an anode member and at least a cathode member, characterized in that a substantially solid electrolyte is provided between said at least one anode member and said at least one cathode member, wherein said electrolyte is a dried product of a mixture comprising lithium perchlorate dissolved in ethylene carbonate and diethyl carbonate in a liquid state wherein said electrolyte comprises lithium perchlorate, ethylene carbonate and diethyl carbonate in a relative liquid weight ratio of substantially 1:

1;

1.

3. A battery according to claim 2 wherein, prior to assembly of the battery, said at least one anode member and said at least one cathode member, respectively consist essentially of components other than said components of the electrolyte.

4. A solid state rechargeable electric battery including at least an anode member and at least a cathode member, characterized in that a substantially solid electrolyte is provided between said at least one anode member and said at least one cathode member, wherein said electrolyte comprises lithium perchlorate and wherein said solid electrolyte comprises around 5-10% of the combined total weight of said at least one anode member, said at least one cathode member and said electrolyte.

5. A battery according to claim 4 wherein said electrolyte is a dried product of a mixture of liquids comprising lithium perchorate dissolved in ethylene carbonate and diethyl carbonate.

6. A battery according to claim 5 wherein lithium perchorate, ethylene carbonate and diethyl carbonate have a relative liquid weight ratio of substantially 1:

1;

1.

7. A battery according to claim 4 wherein, prior to assembly of the battery, said at least one anode member and said at least one cathode member, respectively consist essentially of components other than said components of the electrolyte.

8. A battery according to claim 5 wherein, prior to assembly of the battery, said at least one anode member and said at least one cathode member, respectively consist essentially of components other than said components of the electrolyte.

9. A solid state rechargeable electric battery including at least an anode member and at least a cathode member, characterized in that a substantially solid electrolyte is provided between said at least one anode member and said at least one cathode member, wherein said electrolyte is a dried product of a mixture comprising lithium perchlorate dissolved in ethylene carbonate and diethyl carbonate in a liquid state wherein the liquid weight content of the lithium perchlorate in the electrolyte is substantially ⅓

of the total liquid weight content of the electrolyte.

10. A battery according to claim 9 wherein the ethylene carbonate liquid weight content of the electrolyte is up to ⅓

of the total liquid weight content of the electrolyte.

11. A battery according to claim 9 wherein the diethyl carbonate liquid weight content of the electrolyte is up to ⅓

of the total liquid weight content of the electrolyte.

12. A method of forming a solid state rechargeable electric battery, including the steps of:

(a) providing at least an anode member;

(b) providing at least a cathode member;

(c) providing an injectable electrolyte between said at least one anode member and said at least one cathode member; and

(d) forming said electrolyte by dissolving lithium perchlorate in ethylene carbonate and diethyl carbonate,

wherein said electrolyte is substantially solid when said battery is formed.

13. A method according to claim 12 wherein said lithium perchlorate, ethylene carbonate and diethyl carbonate have a relative liquid weight ratio of substantially 1:

1;

1.

14. A method according to claim 12 further including step (e) of injecting said electrolyte between said at least one anode member and said at least one cathode member.

15. A method according to claim 13 further including step (e) of injecting said electrolyte between said at least one anode member and said at least one cathode member.

16. A method according to claim 12 further including step (f) of drying said electrolyte.

17. A method according to claim 13 further including step (f) of drying said electrolyte.

18. A method according to claim 14 further including step (f) of drying said electrolyte.

19. A method according to claim 15 further including step (f) of drying said electrolyte.