Active material, nonaqueous electrolyte battery, and battery pack

Patent metadata

Field	Value
Publication number	US-10312511-B2
Application number	US-201715416506-A
Country	US
Kind code	B2
Filing date	Jan 26, 2017
Priority date	Mar 18, 2014
Publication date	Jun 4, 2019
Grant date	Jun 4, 2019

Abstract

A vehicle containing an nonaqueous electrolyte battery, the nonaqueous electrolyte battery including:
a negative electrode containing a negative electrode active material; a positive electrode; and a nonaqueous electrolyte, where the negative electrode active material contains a composite oxide of formula:

Li x (Nb 1-y Ta y ) 2-z Ti 1+0.5z M 0.5z O 7 ,
where 0≤x≤5, 0≤y≤1, and 0.4≤z≤1, and M is at least one metal element selected from Mo and W.

First claim

What is claimed is:

1. A vehicle comprising an nonaqueous electrolyte battery, the nonaqueous electrolyte battery comprising:
a negative electrode comprising a negative electrode active material;
a positive electrode; and
a nonaqueous electrolyte,
wherein the negative electrode active material comprises a composite oxide of formula:
Li x (Nb 1-y Ta y ) 2-z Ti 1+0.5z M 0.5z O 7 ,

wherein 0≤x≤5, 0≤y≤1, and 0.4≤z≤1, and M is at least one metal element selected from the group consisting of Mo and W.

2. The vehicle according to claim 1 , wherein a specific surface area of the composite oxide is from 0.1 to 100 m 2 /g.

3. The vehicle according to claim 1 , wherein the negative electrode active material is in a form of particles, a surface of the particles of the negative electrode active material is covered with carbon.

4. The vehicle according to claim 1 , wherein the nonaqueous electrolyte comprising at least one selected from the group consisting of a liquid nonaqueous electrolyte, a gel-like nonaqueous electrolyte, an ordinary temperature molten salt comprising lithium ions, a polymer solid electrolyte and an inorganic solid electrolyte.

5. The vehicle according to claim 1 , wherein the negative electrode active material further comprises at least one selected from the group consisting of a titanium dioxide having an anatase structure, a titanium dioxide having a monoclinic structure, a lithium titanate having a ramsdelite structure, and a lithium titanate having a spinel structure.

6. The vehicle according to claim 1 , wherein x is 0, y is 0 and z is 0.4.

7. A vehicle comprising a battery pack, the battery pack comprising at least one nonaqueous electrolyte battery,
wherein the at least one nonaqueous electrolyte battery comprises:
a negative electrode comprising a negative electrode active material;
a positive electrode; and
a nonaqueous electrolyte,
wherein the negative electrode active material comprises a composite oxide of formula:
Li x (Nb 1-y Ta y ) 2-z Ti 1+0.5z M 0.5z O 7 ,

wherein 0≤x≤5, 0≤y≤1, and 0.4≤z≤1, and M is at least one metal element selected from the group consisting of Mo and W.

8. The vehicle according to claim 7 , wherein the battery pack comprises nonaqueous electrolyte batteries, each of which comprises the negative electrode, the positive electrode and the nonaqueous electrolyte.

9. The vehicle according to claim 8 , wherein the nonaqueous electrolyte batteries are electrically connected to each other in series, in parallel or in a combination thereof.

10. The vehicle according to claim 9 , wherein the nonaqueous electrolyte batteries are electrically connected to each other in series.

11. The vehicle according to claim 9 , wherein the nonaqueous electrolyte batteries are electrically connected to each other in parallel.

12. The vehicle according to claim 9 , wherein the plurality of the nonaqueous electrolyte batteries are electrically connected to each other in a combination of in series and in parallel.

13. The vehicle according to claim 7 , wherein the battery pack further comprises a protective circuit configured to detect a voltage of the nonaqueous electrolyte battery.

Assignees

• Toshiba Kk

Inventors

• Harada Yasuhiro
• Takami Norio
• Yoshida Yorikazu
• Ise Kazuki
• Yoshima Kazuomi

Classifications

• H01M10/486

  for measuring temperature · CPC title

• H01M50/293

  characterised by the material · CPC title

• H01M50/116

  characterised by the material · CPC title

• H01M50/264

  for cells or batteries, e.g. straps, tie rods or peripheral frames · CPC title

• H01M50/298

  characterised by the wiring of battery packs · CPC title