IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0081050
(2011-04-06)
|
등록번호 |
US-8178242
(2012-05-15)
|
발명자
/ 주소 |
- Howard, William G.
- Schmidt, Craig L.
- Scott, Erik R.
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
164 |
초록
▼
A lithium-ion battery includes a positive electrode having a current collector and a first active material and a negative electrode comprising a current collector, a second active material, and a third active material. The second active material comprises a lithium titanate material and the third ac
A lithium-ion battery includes a positive electrode having a current collector and a first active material and a negative electrode comprising a current collector, a second active material, and a third active material. The second active material comprises a lithium titanate material and the third active material comprises V6O13. The third active material exhibits charging and discharging capacity below a corrosion potential of the current collector of the negative electrode and above a decomposition potential of the first active material.
대표청구항
▼
1. A lithium-ion battery comprising: a positive electrode comprising a current collector and a first active material; anda negative electrode comprising a current collector, a second active material, and a third active material, wherein the second active material comprises a lithium titanate materia
1. A lithium-ion battery comprising: a positive electrode comprising a current collector and a first active material; anda negative electrode comprising a current collector, a second active material, and a third active material, wherein the second active material comprises a lithium titanate material and the third active material comprises V6O13;wherein the third active material exhibits charging and discharging capacity below a corrosion potential of the current collector of the negative electrode and above a decomposition potential of the first active material. 2. The lithium-ion battery of claim 1, further comprising a liquid electrolyte. 3. The lithium-ion battery of claim 1, wherein each of the positive electrode and the negative electrode have a zero voltage crossing potential below the corrosion potential of the current collector of the negative electrode and above the decomposition potential of the first active material. 4. The lithium-ion battery of claim 1, wherein the first active material comprises a material selected from the group consisting of LiCoO2 and LiMn2O4. 5. The lithium-ion battery of claim 1, wherein the current collector of the negative electrode comprises a material selected from the group consisting of copper, nickel, aluminum, and titanium. 6. The lithium-ion battery of claim 1, wherein the second active material comprises Li4Ti5O12. 7. The lithium-ion battery of claim 1, wherein the first active material further comprises a binder material. 8. The lithium-ion battery of claim 1, further comprising a quantity of lithium provided in electrical contact with the current collector of the negative electrode. 9. The lithium-ion battery of claim 8, wherein the quantity of lithium is configured to provide a lithium capacity for the negative electrode sufficient to at least compensate for irreversible loss of capacity of the negative electrode. 10. The lithium-ion battery of claim 8, wherein the quantity of lithium is configured to provide a lithium capacity equal to the sum of the irreversible loss of capacity of the negative electrode and the capacity of the third active material. 11. The lithium-ion battery of claim 1, further comprising a porous polymeric separator provided intermediate the positive electrode and the negative electrode. 12. A battery comprising: a positive electrode and a negative electrode, wherein the positive electrode comprises an active material and the negative electrode comprises a lithium titanate active material and a V6O13 active material, wherein the V6O13 active material exhibits charging and discharging capacity below a corrosion potential of a current collector of the negative electrode and above a decomposition potential of the active material of the positive electrode. 13. The battery of claim 12, wherein the positive electrode and the negative electrode have zero voltage crossing potentials above the decomposition potential of the active material and below a corrosion potential of the current collector of the negative electrode. 14. The battery of claim 12, wherein the active material of the positive electrode comprises a material selected from the group consisting of LiCoO2 and LiMn2O4. 15. The battery of claim 12, wherein the corrosion potential of the negative current collector is approximately 3.5 volts. 16. The battery of claim 12, further comprising a lithium patch in contact with the negative electrode. 17. The battery of claim 16, wherein the lithium patch is configured to provide a lithium capacity for the negative electrode sufficient to at least compensate for irreversible loss of capacity of the negative electrode. 18. The battery of claim 16, wherein the lithium patch is configured to provide a lithium capacity equal to the sum of the irreversible loss of capacity of the negative electrode and the capacity of the V6O13 active material. 19. A battery comprising: a positive electrode and a negative electrode, the positive electrode comprising a first active material selected from the group consisting of LiCoO2 and LiMn2O4 and the negative electrode comprising a second active material and a third active material;wherein the second active material comprises Li4Ti5O12 and the third active material comprises V6O13. 20. The battery of claim 19, wherein the positive electrode and the negative electrode have zero voltage crossing potentials below the corrosion potential of the current collector of the negative electrode and above the decomposition potential of the first active material. 21. The battery of claim 19, wherein the first active material is LiCoO2. 22. The battery of claim 19, wherein the negative electrode comprises a current collector formed of a material selected from the group consisting of copper, titanium, aluminum, and nickel. 23. The battery of claim 22, further comprising a lithium patch in electrical contact with the current collector of the negative electrode. 24. The battery of claim 23, wherein the lithium patch is configured to provide a lithium capacity for the negative electrode sufficient to at least compensate for irreversible loss of capacity of the negative electrode. 25. The battery of claim 19, further comprising a liquid electrolyte and a porous polymeric separator provided intermediate the positive electrode and the negative electrode.
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