IP Library Granted Patent US 7,348,102
Granted Patent B2
US 7,348,102 · App. 11/080,592 · Granted Mar 25, 2008

Corrosion protection using carbon coated electron collector for lithium-ion battery with molten salt electrolyte

Assignees: Toyota Motor Corporation; Toyota Motor Engineering & Manufacturing North America, Inc.; Centre National de la Recherche; University de Montreal
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Quick Facts
Patent No.
US 7,348,102
App. No.
11/080,592
Granted
Mar 25, 2008
Kind
B2
Abstract

A battery, such as a lithium-ion battery, comprises a first electrode, a second electrode, a molten salt electrolyte, and an electron collector, associated with the first electrode, the electron collector comprising an electrically conducting film. The battery further includes a protection layer separating the electron collector and the first electrode, the protection layer comprising a carbon-containing material. The electron collector may be an electrically conducting material such as aluminum, aluminum alloy, copper, nickel, other metal (such as alloys), conducting polymer, and the like. In one example, the protection layer is a graphite layer. In other examples, the protection layer may be a fullerene film, carbon nanotube film, or other carbon-containing material.

Claims (43)

1. A battery comprising

a first electrode;

a second electrode;

a molten salt electrolyte;

an electron collector, associated with the first electrode, the electron collector comprising an electrically conducting film; and

a protection layer separating the electron collector and the first electrode, the protection layer comprising a carbon-containing material,

wherein the battery is a lithium-ion battery.

2. The battery of claim 1 , wherein the electron collector is aluminum.

3. The battery of claim 1 , wherein the electron collector is an aluminum alloy.

4. The battery of claim 1 , wherein the protection layer comprises an electrically conducting carbon film.

5. The battery of claim 1 , wherein the protection layer comprises graphite.

6. A battery, comprising

a first electrode;

a second electrode;

a molten salt electrolyte;

an electron collector, associated with the first electrode, the electron collector comprising an electrically conducting film; and

a protection layer separating the electron collector and the first electrode, the protection layer comprising a carbon-containing material, the carbon-containing material being a carbon black.

7. A battery comprising

a first electrode;

a second electrode;

a molten salt electrolyte;

an electron collector, associated with the first electrode, the electron collector comprising an electrically conducting film; and

a protection lever separating the electron collector and the first electrode, the protection layer comprising a carbon-containing material, the carbon-containing material being fullerenes.

8. A battery, comprising

a first electrode;

a second electrode;

a molten salt electrolyte;

an electron collector, associated with the first electrode, the electron collector comprising an electrically conducting film; and

a protection layer separating the electron collector and the first electrode, the protection layer comprising a carbon-containing material, the carbon-containing material being carbon nanotubes.

9. A battery, comprising

a first electrode;

a second electrode;

a molten salt electrolyte;

an electron collector, associated with the first electrode, the electron collector comprising an electrically conducting film; and

a protection layer separating the electron collector and the first electrode, the protection layer comprising an electron-conducting polymer.

10. The battery of claim 6 , wherein the battery is a lithium-ion battery.

11. The battery of claim 6 , wherein the electron collector comprises aluminum.

12. The buttery of claim 7 , wherein the battery is a lithium-ion battery.

13. The battery of claim 7 , wherein the electron collector comprises aluminum.

14. The battery of claim 8 , wherein the battery is a lithium-ion battery.

15. The battery of claim 8 , wherein the electron collector comprises aluminum.

16. The buttery of claim 9 , wherein the battery is a lithium-ion battery.

17. The buttery of claim 9 , wherein the electron collector comprises aluminum.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 19, 2008
From: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
To: TOYOTA MOTOR CORPORATION
Reel/Frame 021398/0800 →
CORRECTIVE ASSIGNMENT TO CORRECT THE TO RE-RECORD THE ASSIGNMENT PREVIOUSLY RECORDED ON REEL 019427 FRAME 0251. ASSIGNOR(S) HEREBY CONFIRMS THE CORRECT ASSIGNORS AND ASSIGNEES ARE NOW INCLUDED. Recorded Jun 28, 2007
From: LI, WEN; UKAI, JUNZO; AWANO, HIROAKI; OYAMA, YUTAKA; MATSUI, MASAKI; PERRON, GERALD; ARMAND, MICHEL B
To: TOYOTA MOTOR CORPORATION; TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.; CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE; UNIVERSITY DE MONTREAL
Reel/Frame 019492/0339 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 14, 2007
From: LI, WEN; UKAI, JUNZO; AWANO, HIROAKI; OYAMA, YUTAKA; MATSUI, MASAKI; PERRON, GERALD; ARMAND, MICHEL B.
To: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
Reel/Frame 019427/0251 →
Continuity (2)
Provisional Application 6055344300 · Mar 16, 2004
Related Publication 20060063072A1 · Mar 23, 2006