Patent ID: 8647774
Filing Date: 2014-02-11
Classification: H01M,Y02E

Abstract:
1. An active material, comprising a titanium composite oxide, wherein: the titanium composite oxide comprises a monoclinic β-type titanium composite oxide as a main phase, such that when an integral intensity of a main peak of the monoclinic β-type titanium composite oxide obtained with a wideangle X-ray diffraction method having a CuKα-ray as an X-ray source is 100, a relative value of an integral intensity of a main peak that presents the range of 2θ=25.1 to 25.5° attributed to a sub-phase of H the titanium composite oxide has a crystallite diameter of 5 nm or more as calculated from the main peak of the monoclinic β-type titanium composite oxide obtained with the wideangle X-ray diffraction method.