摘要:
According to one embodiment, a negative electrode active material for nonaqueous electrolyte battery includes a titanium oxide compound having a crystal structure of monoclinic titanium dioxide. When a monoclinic titanium dioxide is used as the active material, the effective capacity is significantly lower than the theoretical capacity though the theoretical capacity was about 330 mAh/g. The invention comprises a titanium oxide compound which has a crystal structure of monoclinic titanium dioxide and a (001) plane spacing of 6.22 Å or more in the powder X-ray diffraction method using a Cu—Kα radiation source, thereby making an attempt to improve effective capacity.
摘要:
According to one embodiment, a negative electrode active material for a nonaqueous electrolyte battery is provided. The active material includes a titanium oxide compound having a crystal structure of a monoclinic titanium dioxide and having a crystallite, the crystallite having a crystallite size of 5 to 25 nm when it is calculated by using the half width of the peak of a (110) plane obtained by a powder X-ray diffraction (XRD) method using a Cu—Kα ray.
摘要:
According to one embodiment, there is provided an active material including a titanium oxide compound having a monoclinic titanium dioxide crystal structure and satisfying the equation (I). S1/(S2+S3)≦1.9 (I). In the above equation, S1 is the peak area of a peak existing in a wavelength range from 1430 cm−1 to 1460 cm−1, S2 is the peak area of a peak existing in a wavelength range from 1470 cm−1 to 1500 cm−1, and S3 is the peak area of a peak existing in a wavelength range from 1520 cm−1 to 1560 cm−1, in the infrared diffusion reflective spectrum of the active material after pyridine is absorbed and then released.
摘要:
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.
摘要:
According to one embodiment, a negative electrode active material includes a compound having a crystal structure of monoclinic titanium dioxide. The compound has a highest intensity peak detected by an X-ray powder diffractometry using a Cu-Kα radiation source. The highest intensity peak is a peak of a (001) plane, (002) plane, or (003) plane. A half-width (2θ) of the highest intensity peak falls within a range of 0.5 degree to 4 degrees.
摘要:
According to one embodiment, a negative electrode active material includes a compound having a crystal structure of monoclinic titanium dioxide. The compound has a highest intensity peak detected by an X-ray powder diffractometry using a Cu-Kα radiation source. The highest intensity peak is a peak of a (001) plane, (002) plane, or (003) plane. A half-width (2θ) of the highest intensity peak falls within a range of 0.5 degree to 4 degrees.
摘要:
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.
摘要:
A negative electrode active material according to one embodiment includes a titanium oxide compound having a crystal structure of monoclinic system titanium dioxide. The titanium oxide compound is modified by at least one kind of ion selected from the group consisting of an alkali metal cation, an alkali earth metal cation, a transition metal cation, a sulfide ion, a sulfuric acid ion and a chloride ion.
摘要:
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.
摘要:
According to one embodiment, there is provided an active material for a battery. The active material comprises a monoclinic β-type titanium composite oxide which contains fluorine.