Battery

Patent metadata

Field	Value
Publication number	US-9812738-B2
Application number	US-201514980257-A
Country	US
Kind code	B2
Filing date	Dec 28, 2015
Priority date	Jun 28, 2013
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

Disclosed is a battery comprising a cathode, an anode and an electrolyte; the cathode comprises a cathode material, the cathode material comprises a cathode active material which is capable of reversibly intercalating and deintercalating a first metal ions; the electrolyte comprises at least a solvent capable of dissolving solute, the solute being ionized to a second metal ions that can be reduced to a metallic state during a charge cycle and be oxidized from the metallic state to the second metal ions during a discharge cycle and the first metal ions that can deintercalate from the cathode active material during the charge cycle and intercalate into the cathode active material during the discharge cycle; and the anode and/or the electrolyte further comprise an additive which is a bismuth compound. The gas production amount could be effectively reduced when the battery is being used.

First claim

The invention claimed is:

1. A battery comprising:
a cathode;
an anode; and
an electrolyte;
wherein the cathode comprises a cathode material, the cathode material comprising a cathode active material which is configured to reversibly intercalate-deintercalate a plurality of first metal ions;
wherein the electrolyte comprises at least a solvent configured to dissolve a solute, the solute being ionized to a plurality of second metal ions that can be reduced to a metallic state during a charge cycle and be oxidized from the metallic state to the plurality of second metal ions during a discharge cycle, and the first plurality of metal ions are configured to deintercalate from the cathode active material during the charge cycle and intercalate into the cathode active material during the discharge cycle; and
wherein at least one of the anode and the electrolyte further comprise an additive which comprises a bismuth compound.

2. The battery according to claim 1 , wherein the bismuth compound is selected from the group consisting of a bismuth trioxide and a bismuth nitrate.

3. The battery according to claim 1 , wherein the weight percentage range of the bismuth compound in the electrolyte is between 0.01 and 5%, inclusively.

4. The battery according to claim 1 , wherein the weight percentage range of the bismuth compound in the anode is between 0.1 and 10%, inclusively.

5. The battery according to claim 1 , wherein the electrolyte comprises a plurality of anions that comprise a plurality of alkyl sulfonate ions.

6. The battery according to claim 1 , further comprising an anode modifier that comprises at least one of a gelatin, an agar, cellulose, a cellulose ether and a soluble salt thereof, a dextrin, and a cyclodextrin.

7. The battery according to claim 1 , wherein the cathode material further comprises a conductive agent graphite, wherein the conductive agent graphite comprises a particle size that is less than 50 μm, and the conductive agent graphite comprises a crystallinity that is no less than 90%.

8. The battery according to claim 1 , wherein the plurality of first metal ions is selected from a group consisting of a plurality of Li ions and a plurality of Na ions.

9. The battery according to claim 1 , wherein the plurality of second metal ions is selected from the group consisting of a plurality of manganese ions, a plurality of iron ions, a plurality of copper ions, a plurality of zinc ions, a plurality of chromium ions, a plurality of nickel ions, a plurality of tin ions and a plurality of lead ions.

10. The battery according to claim 1 , wherein the electrolyte comprises a plurality of anions that comprise at least one of a plurality of sulfate ions, a plurality of chloride ions, a plurality of acetate ions, and a plurality of nitrate ions.

11. The battery according to claim 1 , wherein the electrolyte comprises a pH range that is between 3 and 7, inclusively.

12. The battery according to claim 1 , wherein the anode comprises at least one of:
at least one metal of Zn, Ni, Cu, Ag, Pb, Mn, Sn, Fe, Al or passivated metal thereof or an alloy thereof; and
at least one of graphite foil, graphite sheet, carbon cloth, carbon felt, carbon fibers, tinned copper, or brass.

13. The battery according to claim 1 , wherein the cathode comprises a combined current collector and a cathode plate, the combined current collector comprising a cathode current collector and a conductive film which is coated on the cathode current collector, the cathode plate comprising the cathode active material; and the anode being selected from the group consisting of a metal, an alloy, and a carbon-based material.

14. The battery according to claim 1 , wherein the cathode comprises a combined current collector and a cathode plate, the combined current collector comprising a cathode current collector and a conductive film which is coated on the cathode current collector, the cathode plate comprising the cathode active material; the combined current collector having two opposite surfaces and the cathode plate being formed on the two opposite surfaces; the battery comprising two anodes which are sharing the cathode; the anode being selected from the group consisting of a metal, an alloy, and a carbon-based material.

15. The battery according to claim 1 , wherein the cathode comprises a combined current collector and a cathode plate, the combined current collector comprising a cathode current collector and a conductive film which is coated on the cathode current collector, the cathode plate comprising the cathode active material; the combined current collector having two opposite surfaces and the cathode plate being formed on at least one surface of the combined current collector that faces to the anode; the battery comprising two cathodes which are sharing the anode; the anode being selected from the group consisting of a metal, an alloy, or a carbon-based material.

16. The battery according to claim 1 , wherein the cathode comprises a combined current collector and a cathode plate, the combined current collector comprising a cathode current collector and a conductive film which is coated on the cathode current collector, the cathode plate comprising the cathode active material; the combined current collector having two opposite surfaces and the cathode plate being formed on at least one surface of the combined current collector that faces to the anode; the anode being selected from the group consisting of a metal, an alloy or a carbon-based material; the battery comprising a pair of cathodes and an anode, wherein n≧2; the cathodes and anodes are arranged alternately, two adjacent cathodes share the anode which is located between the two adjacent cathodes and two adjacent anodes share the cathode which is located between the two adjacent anodes.

17. The battery according to claim 1 , wherein the cathode comprises a combined current collector and a cathode plate which is formed on one surface of the combined current collector, the combined current collector comprising a cathode current collector and a conductive film which is coated on the cathode current collector, the cathode plate comprising the cathode active material; the battery comprising at least one bipolar electrode which is located between the cathode and the anode, the bipolar electrode comprising a bipolar current collector and the cathode plate, the bipolar current collector having two opposite surfaces which are defined as a first surface and a second surface, the cathode plate being formed on the first surface; the second metal ions being configured to reduce to a metallic state and deposit on the second surface of the bipolar current collector during a charge cycle and be oxidized from the metallic state to the second plurality of metal ions during a discharge cycle; the anode being selected from the group consisting of a metal, an alloy and a carbon-based material; the electrolyte being located between the cathode and the anode.

18. A battery pack comprising a number of batteries according to claim 1 .

19. An uninterruptible power supply comprising a number of batteries according to claim 1 .

20. A vehicle comprising a number of batteries according to claim 1 being configured as power supply of driven engine.

Assignees

• Positec Power Tools Suzhou Co Ltd
• Chen Pu

Inventors

• Liu Yang
• Chen Pu
• Yan Jing

Classifications

• H01M2004/029

  Bipolar electrodes · CPC title

• H01M4/663

  containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres · CPC title

• H01M2300/0002

  Aqueous electrolytes · CPC title

• H01M10/38

  Construction or manufacture · CPC title

• H01M2004/027

  Negative electrodes · CPC title