Electrode material, a battery electrode, method of producing them, nonaqueous electrolyte battery and battery pack
AssigneeKabushiki Kaisha Toshiba
InventorsKeigo HOSHINA, Wen Zhang, Yasuhiro Harada, Hiroki Inagaki, Norio Takami
Life of this patent
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Abstract
According to one embodiment, there is provided an electrode material. The electrode material includes an active material which includes a titanium oxide compound having a monoclinic titanium dioxide crystal structure. The electrode material further includes a compound which exists on the surface of the active material and has a trialkylsilyl group represented by the formula (I). wherein R1, R2 and R3, which may be the same or different, respectively represent an alkyl group having 1 to 10 carbon atoms.
Claims12
An electrode material comprising:
- an active material comprising a titanium oxide compound having a monoclinic titanium dioxide crystal structure;
- and
- a compound which exists on the surface of the active material and has a trialkylsilyl group represented by the formula (I):
- wherein, R1, R2 and R3, which may be the same or different, respectively represent an alkyl group having 1 to 10 carbon atoms.
A method of producing an electrode material, comprising:
- dipping particle of titanium oxide compound having a monoclinic titanium dioxide crystal structure in a solution of a compound with a trialkylsilyl group represented by the formula (I);
- and
- separating the particle of the titanium oxide compound to which the compound with a trialkylsilyl group is adhere from the solution.
- wherein, R1, R2 and R3, which may be the same or different, respectively represent an alkyl group having 1 to 10 carbon atoms.
A battery electrode comprising:
- an active material comprising a titanium oxide compound having a monoclinic titanium dioxide crystal structure;
- and
- a compound with a trialkylsilyl group represented by the formula (I):
- wherein, R1, R2 and R3, which may be the same or different, respectively represent an alkyl group having 1 to 10 carbon atoms.
A method of producing a battery electrode, comprising:
- preparing a slurry by dispersing an active material comprising a titanium oxide compound having a monoclinic titanium dioxide crystal structure and a compound with a trialkylsilyl group represented by the formula (I) in a solvent:
- wherein, R1, R2 and R3, which may be the same or different, respectively represent an alkyl group having 1 to 10 carbon atoms.
A nonaqueous electrolyte battery comprising:
- a negative electrode comprising an active material which comprises a titanium oxide compound having a monoclinic titanium dioxide crystal structure;
- a positive electrode;
- and
- a nonaqueous electrolyte,
- wherein the nonaqueous electrolyte comprises a compound having a trialkylsilyl group represented by the formula (I):
- wherein, R1, R2 and R3, which may be the same or different, respectively represent an alkyl group having 1 to 10 carbon atoms.
Dependencies are inferred from the claim text.