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US 10,096,823 B2Granted
Electrode material, nonaqueous electrolyte battery, battery pack, and vehicle
AssigneeKabushiki Kaisha Toshiba
InventorsYasuhiro Harada, Norio Takami, Hiroki Inagaki
Life of this patent
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Abstract
According to one embodiment, an electrode material is provided. The electrode material includes active material particles. The active material particle includes a phase of a monoclinic titanium dioxide and a phase of the spinel type lithium titanate. The active material particle includes a shell part and a core part surrounded by the shell part. The shell part is formed by dispersing at least a part of the phase of the spinel type lithium titanate on the active material particle. The core part includes a part of the phase of the monoclinic titanium dioxide.
Claims12
An electrode material comprising:
- active material particles comprising
- a phase of monoclinic titanium dioxide;
- and
- a phase of spinel type lithium titanate;
- wherein the active material particle comprises
- a shell part formed by dispersing at least a part of the phase of the spinel type lithium titanate on a surface of the active material particle, and
- a core part which contains a part of the phase of the monoclinic titanium dioxide and is surrounded by the shell part,
- wherein the active material particle further comprises an intermediate part located between the core part and the shell part,
- the intermediate part contains another part of the phase of the monoclinic titanium dioxide and another part of the phase of the spinel type lithium titanate, and
- a crystal lattice of the monoclinic titanium dioxide and a crystal lattice of the spinel type lithium titanate interpenetrate in the intermediate part.
7 more elements
Dependencies are inferred from the claim text.