Method of making a carbon monofluoride impregnated current collector including a 3D framework

Patent metadata

Field	Value
Publication number	US-10069147-B2
Application number	US-201514797343-A
Country	US
Kind code	B2
Filing date	Jul 13, 2015
Priority date	Aug 12, 2010
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

One example includes a battery case sealed to retain electrolyte, an electrode disposed in the battery case, the electrode comprising a current collector formed of a framework defining open areas disposed along three axes (“framework”), the framework electrically conductive, with active material disposed in the open areas; a conductor electrically coupled to the electrode and sealingly extending through the battery case to a terminal disposed on an exterior of the battery case, a further electrode disposed in the battery case, a separator disposed between the electrode and the further electrode and a further terminal disposed on the exterior of the battery case and in electrical communication with the further electrode, with the terminal and the further terminal electrically isolated from one another.

First claim

What is claimed is:

1. A method of making a battery, comprising:
disposing active material, including carbon mono fluoride with a formula CFx into a current collector including an electrically-conductive, metal framework defining open areas disposed along three axes;
curing the active material to the current collector;
compressing the electrically-conducive, metal framework into a pelletized electrode;
stacking the pelletized electrode into a battery stack with a second pelletized electrode;
disposing the battery stack in a battery case;
connecting the battery stack to terminals for coupling to electronics;
filling the battery case with electrolyte; and
sealing the battery case.

2. The method of claim 1 , further comprising forming the electrically-conductive, metal framework out of a metallic foam.

3. The method of claim 1 , further comprising forming the active material by mixing the carbon monoflouride into a slurry with binder and conductive additive.

4. The method of claim 1 , wherein disposing active material includes injecting the active material into the electrically-conductive framework.

5. The method of claim 1 , wherein curing the active material includes baking the active material in an oven.

6. The method of claim 1 , wherein compressing the electrically-conductive, metal framework includes compressing to a porosity of from around 30% to 40%.

7. The method of claim 1 , further comprising cutting an excised electrode from the pelletized electrode.

8. The method of claim 1 , wherein stacking includes stacking the pelletized electrode into a battery stack with the second pelletized electrode such that the stack has a predetermined energy density.

9. A method of making a battery, comprising:
forming an electrically-conductive metal framework out of metallic foam, the electrically-conductive metal framework defining open areas disposed along three axes;
forming active material, including mixing carbon monoflouride with a formula CFx into a slurry with binder and conductive additive;
injecting the active material into the electrically-conductive, metal framework;
curing the active material to the current collector;
compressing the electrically-conducive, metal framework into a pelletized electrode;
stacking the pelletized electrode into a battery stack with a second pelletized electrode;
disposing the battery stack in a battery case;
connecting the battery stack to terminals for coupling to electronics;
filling the battery case with electrolyte; and
sealing the battery case.

10. The method of claim 9 , wherein curing the active material includes baking the active material in an oven.

11. The method of claim 9 , wherein compressing the electrically-conductive, metal framework includes compressing to a porosity of from around 30% to 40%.

12. The method of claim 10 , wherein stacking includes stacking the pelletized electrode into a battery stack with the second pelletized electrode such that the stack has a predetermined energy density.

Assignees

• Cardiac Pacemakers Inc

Inventors

• Wang Francis
• Schmalhurst Lisa B
• Sunstrom Iv Joseph E
• Chi Ignacio
• Findell Steven P

Classifications

• H01M50/536

  characterised by the method of fixing the leads to the electrodes, e.g. by welding · CPC title

• H01M50/534

  characterised by the material of the leads or tabs · CPC title

• H01M4/133

  Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title

• H01M4/762

  Porous or perforated metallic containers · CPC title

• H01M4/043 Primary

  involving compressing or compaction · CPC title