Back to results
US 9,312,539 B2Granted
Active material
AssigneeKabushiki Kaisha Toshiba
InventorsKeigo Hoshina, Yasuhiro Harada, Hiroki Inagaki, Norio Takami
Life of this patent
Estimating the term…
Abstract
According to one embodiment, a negative electrode active material includes monoclinic system titanium dioxide having an average pore diameter falling within a range of 8 nm to 25 nm. A volume of pores having a diameter of 10 nm or less falls within a range of 10% to 30% of a total pore volume.
Claims18
Negative electrode active material particles for a nonaqueous electrolyte battery consisting of:
- monoclinic system titanium dioxide, each of the particles having pores, the pores having an average pore diameter falling within a range of 8 to 25 nm, 10 to 30% of a total volume of the entire pores being a total volume of a part of the pores having a diameter ranging from 1 nm to 10 nm, wherein the volume of pores is measured by a nitrogen gas adsorption method using a BJH method.
A nonaqueous electrolyte battery comprising:
- a negative electrode comprising a negative electrode active material particles consisting of monoclinic system titanium dioxide, each of the particles having pores, the pores having an average pore diameter falling within a range of 8 to 25 nm, 10 to 30% of a total volume of the entire pores being a total volume of a part of the pores, having a diameter ranging from 1 nm to 10 nm, wherein the volume of pores is measured by a nitrogen gas adsorption method using a BJH method;
- a positive electrode;
- and
- a nonaqueous electrolyte.
1 more element
Dependencies are inferred from the claim text.